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    Audio-Technica ATH-CKS50TW True Wireless Earbud

    🚚 Order within the next 2 hours, 15 minutes for delivery by 31 May, 2024.


    Newly designed drivers for a revolutionary music experience  

    The newly developed large-diameter drivers (9 mm HD TWS drivers with deep bass) deliver deep, powerful bass while ensuring a comfortable fit—an important factor for truly wireless headphones. The airtight fit prevents the bass from escaping to deliver a unique, stress-free music experience.  


    Acoustic ducts for rich low-frequency sounds  

    Ducts on the back of the driver control airflow to ensure a detailed acoustic space. The design allows for ideal movement of the driver to deliver rich low-frequency sounds.  


    Up to 20 hours*1 without recharging—the best in class!  

    The high-capacity battery provides around 20 hours*1 of continuous playback without charging. Using the headphones with the charging case allows as much as 50 hours*2 of playback, significantly reducing how often recharging is necessary. To help ensure extended usability when not using the charging case, the power can be turned on and off directly on the headphones.  

    *1 As of September 2021 according to in-house figures. With noise-cancelling disabled. Playback for around 15 hours is possible with noise-cancelling enabled. Results may vary depending on usage conditions.  

    *2 Results may vary depending on usage conditions.  


    Fast-charging support  

    Charging for just 10 minutes (approx.) provides about 90 minutesof continuous playback. Simply place the headphones in the charging case and plug the case in for a quick charge before heading out.  

    *With noise-cancelling disabled. Results may vary depending on usage conditions.  


    Block outside sounds at the press of a button  

    The feed-forward active noise-cancelling function ensures an immersive audio experience even in noisy environments such as those with air conditioners or purifiers or on public transportation.  

    *Noise-cancelling and hear-through functions are disabled by default.  


    Enjoy deep bass while being aware of your surroundings with hear-through  

    The built-in microphone captures ambient sounds so users can remain aware of their surroundings during use. The hear-through function is useful for listening to music while walking, doing housework, working remotely, or using public transportation. The comfortable fit ensures a natural experience when using the hear-through function.  


    Easy-to-wear, secure fit  

    The newly developed structure ensures a stable fit that prevents the headphones from falling out of the ears. The increased contact surface between the headphone and ear reduces the burden, providing a light, natural fit. The headphones are comfortable even for extended periods, allowing you to enjoy deep bass for longer.  


    Hybrid eartip structure combining hard and soft silicone material  

    The headphone’s eartips are soft and pliable for a gentle fit. Meanwhile, the parts of the shaft that transmit sound are stiff to reduce adverse impacts on sound quality and noise-cancelling. The new, hybrid structure utilizes the varying hardness of the two silicone materials to create a comfortable fit with superior sound performance.    

    The tactile umbrella fits naturally in the ear canal for enhanced airtightness, an essential factor for the noise-cancelling function. The high-strength shaft also minimizes sound transmission loss to bring detailed audio directly to the eardrum.  


    Intuitive operation that doesn’t hamper enjoyment  

    Designed for reliable, stress-free operation for a more enjoyable experience. The left button adjusts the volume and switches between hear-through and noise-cancelling functions, while the right button lets you easily start/stop playback, skip between songs, or enable quick hear-through.  


    Quick hear-through for instant volume adjustment and playback of voices  

    The quick hear-through function is perfect for tuning in or out of your surroundings by allowing you to hear announcements or listen to those around you. This single-action function instantly lowers playback volume and captures ambient sounds while enhancing the vocal bandwidth.  


    Minimize audio lag with Low Latency Mode  

    Enjoy a more immersive experience with minimal sound delay while playing games or watching videos on your smartphone or tablet with Low Latency Mode.  

    *Low Latency Mode can also be turned on/off from the Connect app. Bluetooth connections may be affected by obstacles and ambient radio wave conditions.  


    Sony’s 360 Reality Audio certified headphones: ATH-CKS50TW  

    360 Reality Audio is a new immersive music experience that uses Sony's object-based 360 Spatial Sound technology. Individual sounds such as vocals, chorus, piano, guitar, bass and even sounds of the live audience can be placed in a 360 spherical sound field, giving artists and creators a new way to express their creativity. Listeners can be immersed in a field of sound exactly as intended by artists and creators.  

    The combination of 360 Reality Audio and Audio-Technica’s long-cultivated acoustic technology allows listeners to fully experience the world of sound envisioned by the creators. You can listen to a variety of 360 Reality Audio sound sources and furthermore, your enjoyment of listening to sound will expand.  

    Requires use of subscription to compatible online music service – subscription fees may apply.  

    Compatible services may not be available in certain countries/regions.  

    Please visit https://www.sony.net/360RA to check compatibility of the service.  

    "SONY" is a registered trademark of Sony Group Corporation.  


    Rain and water splashproof design  

    The headphones boast an IPX4*-equivalent JIS/IEC protection rating (headphones only). The splashproof design means you never have to worry about keeping the headphones dry in sudden rain showers or when exercising.  

    *An IPX4-equivalent rating signifies the product will not be adversely affected by water splashing from any direction. This rating does not ensure protection in hot and humid locations such as baths and showers. The product is not completely waterproof.  


    Clearer voices with Qualcomm® cVc™ Generation 8.0  

    Enjoy improved microphone performance for natural-sounding calls. Whether in the office, at home, or in an online class, your voice will be captured and transmitted clearly.  


    Sidetone function for more natural conversations  

    Wearing headphones makes hearing your own voice difficult. The sidetone function allows you to hear your own voice during calls for more natural-sounding conversations, almost as if you weren’t wearing headphones at all. This can prevent you from talking louder than needed—a common problem during calls.  


    Multipoint support for two simultaneous Bluetooth® connections  

    You can connect to both your smartphone and computer or tablet at the same time, so you’ll never need to worry about switching devices again. Respond immediately to incoming calls on your smartphone while enjoying videos on your tablet without having to re-pair.  


    Adjustable button assignments for unique operation patterns  

    Select a user-friendly operation pattern that best suits your preferences and usage from the Connect app. Available patterns include music priority and reversed left/right options.  


    Highly stable connection for interruption-free listening  

    Despite being chock-full of useful functions, the headphones are compact, with a unique antenna structure designed to ensure stable connectivity while fitting in limited space. This helps prevent sound from being interrupted even in train stations or other crowded locations.  


    Qualcomm® TrueWireless™ Mirroring* for independent transmission  

    Independent transmission to the left and right sides reduces sound interruptions and delays for videos on all devices, including Android and iOS smartphones.  

    When connecting a primary headphone via Bluetooth, the secondary headphone will mirror the audio signal of the primary headphone for independent transmission.  

    Preventing audio signal exchanges from primary and secondary headphones reduces audio interruptions and delays. The reduced communication load on the primary device also helps minimize the amount of power that is used.  


    Qualcomm® aptX™️ Adaptive Audio  

    Interruption-free sound for music, videos, and games  


    High-quality sound with low latency in any setting  

    Qualcomm® aptX™️ Adaptive Audio changes the bit rate*1 of audio according to the radio wave environment and music data transfer status, ensuring a stable connection and reducing delays when watching videos or playing games for a stress-free acoustic experience.*2  

    *1 Transfer bit rates are adjusted to between 280 (equivalent to 44.1 kHz/16-bit CD) and 420 kbps (48 kHz/24-bit high-quality sound).  

    *2 Qualcomm® aptX™️ Adaptive Audio requires a connection to an Android™ device with aptX Adaptive enabled.  


    Adjustable sound quality, volume, and balance  

    Equalizer: Customize the sound to your liking with four equalizer presets in addition to the original (flat) setting, or customize the equalizer settings to create your preferred sound. The graphic equalizer makes it easy to intuitively adjust the sound settings to perfectly suit your tastes.  

    Volume step adjustment: Easily fine-tune the volume adjustment level to get the perfect listening comfort for your ears. Use the app to change the adjustment steps from 16 (default) to 32 or 64 steps for more fine-grained control.  

    Other settings: Easily switch codecs or locate lost headphones using the app.  


    Automatic power-on when removed from the case  

    The headphones automatically turn on when they are removed from the case for quick usability*. When the headphones are put back in the case, they power down and begin charging. The power can also be turned on/off directly from the headphones.  

    *Pairing is required on first use.  


    Supports Fast Pair for convenient connection with Android devices*  

    Set the headphones to the pairing mode and touch the pop-up that appears on the screen. in one touch, you can pair with your Android devices. You can even check to see where you last placed it.  

    * Only one Android device can be paired by using Fast Pair.  

    Google and Android are trademarks of Google LLC.  


    Single-ear usability  

    Listen to music or make calls from one or both headphones, whichever best suits your usage environment.  


    LED indicator lamps for quickly checking remaining battery power  

    The four LED indicator lamps light up or flash whenever the charging case is opened or closed so the user can see the charging status or remaining charging case battery power at a glance.  



    Other Specifications  

    • Bluetooth 5.2  

    • Multipairing function for registering multiple devices  

    Easily pair with a second Bluetooth device after pairing with a frequently used device (including iPhone, Android, Windows PC, Mac, and tablet devices).  

    • Voice guidance function  

    Voice guidance can be used for notifications, including power and pairing statuses as well as remaining battery level (High, Medium, or Low).  

    When you hear music with a heavy bass line, you can’t help but feel the urge to dance. Some say its just human instinct. Getting the same experience with in-ear headphones requires a secure fit with excellent sound isolation. Any sound that escapes lessen the intensity of the bass.  

    Through a variety of models, Audio-Technica’s deep bass headphones have focused on the relationship between bass and fit for over 10 years.  

    The ATH-CKS50TW truly wireless headphones combine advanced acoustic technology for stunning bass with a comfortable fit that prevents that deep bass sound from escaping.  

    The built-in high-capacity battery provides 20 hours of powerful, continuous bass. All you have to do is get lost in the music. 

    Type Dynamic
    Driver Diameter 9 mm
    Frequency Response 5 to 20,000 Hz
    Sensitivity 110 dB/mW
    Impedance 20 ohms
    Weight Headphones: Approx. 8 g (0.28 oz) (L side), approx. 8 g (0.28 oz) (R side); Charging case: Approx. 60 g (2.1 oz)
    Charging Time Headphones: Approx. 3 hours Charging case: Approx. 3 hours The figures above depend on operating conditions.
    Operating Temperature 5 °C to 40 °C (41 °F to 104 °F)
    Operating Time Continuous transmission time (music playback): Max. approx. 20 hours (headphones), Max. approx. 50 hours (if charging case is used in combination) The figures above depend on operating conditions.
    Microphone Type MEMS type
    Microphone Sensitivity -38 dB (1 V/Pa, at 1 kHz)
    Microphone Frequency Response 100 to 8,000 Hz
    Microphone Polar Pattern Omnidirectional
    Power Supply Headphones: DC 3.7 V lithium ion battery Charging case: DC 3.7 V lithium ion battery
    Water-Resistant (drip-proof) Performance IPX4 Headphones only
    Accessories Included USB charging cable (30 cm (12"), USB Type-A / USB Type-C), Eartips (XS, S, M, L)
    Notes For product improvement, the product is subject to modification without notice.
    Bluetooth® Version Bluetooth version 5.2
    Operating Range Line of sight - approx. 10 m (33')
    Maximum RF Output 10 mW EIRP
    Frequency Band 2.402 GHz to 2.480 GHz
    Modulation Method GFSK, Pi/4DQPSK, 8DPSK
    Spread Spectrum Method FHSS
    Compatible Bluetooth Profiles A2DP, AVRCP, HFP
    Support Codec Qualcomm® aptX™ Adaptive audio, Qualcomm® aptX™ audio, AAC, SBC
    Supported Content Protection Method SCMS-T
    Supported Sample Rates 44.1 kHz, 48 kHz
    Supported Bit Rates 16 bit, 24 bit When using Qualcomm® aptX™ Adaptive audio.
    Transmission Band 20 to 20,000 Hz