ATH-CK3TW User Manual Wireless Headphones
Introduction Thank you for purchasing this Audio-Technica product. Before using the product, please read through the Quick Start Guide and Caution Guide, as well as this user manual when necessary, to ensure that you use the product correctly. Safety precautions Although this product was designed to be used safely, failing to use it correctly may result in an accident. To ensure safety, observe all warnings and cautions while using the product.
Safety precautions Cautions for charging case •• Do not disassemble, modify or attempt to repair the product to avoid electric shock, malfunction or fire. •• Do not cover the product with a cloth to avoid fire or injury by overheating. •• Do not subject the product to strong impact to avoid electric shock, malfunction or fire. •• When charging, make sure to use the included USB charging cable. •• Do not charge with devices that have quick-charge functionality (with a voltage of 5 V or more).
Safety precautions Cautions for rechargeable battery The headphones are equipped with a rechargeable battery (lithium polymer battery). The charging case is equipped with a rechargeable battery (lithium-ion battery). •• Do not use, leave or store the battery in the following places: –– Area exposed to direct sunlight or high temperatures and humidity –– Inside of a car under the blazing sun –– Near heat sources such as heat registers •• If battery fluid gets into eyes, do not rub them.
Notes on use •• When using the product, select the eartips that fits your ears best, and wear the product securely. •• Be sure to read the connected device’s user manual before use. •• Audio-Technica will not be liable in any way for any loss of data in the unlikely event that such losses should occur while using the product. •• This product can be used to talk on the phone only when using a mobile telephone network. Support for telephony apps that use a mobile data network is not guaranteed.
For a more comfortable Bluetooth® communication experience The effective communication range of this product varies depending on obstructions and radio wave conditions. For a more enjoyable experience, please use the product as close as possible to the Bluetooth device. To minimize noise and sound disruptions, avoid placing your body or other obstacles between the product’s antenna (R side) and the Bluetooth device.
Part names and functions Headphones L/R (left/right) indicator Touch sensor areas Use to play/pause music and answer/end phone calls. Also use to adjust the volume (+/–). A microphone is built into the R (right) side. Indicator lamps Displays the operating status and battery level of the headphones. Charging case Cover Battery jack Use to connect the included USB charging cable and charge the product. Charging indicator lamps Flashes when charging the charging case.
Charging the battery Charging the headphones and charging case • Fully charge the battery when using for the first time. • If the rechargeable battery power is running low, the product will play a confirmation tone and voice guidance through the headphones, and the indicator lamps of the headphones will flash in red. If a confirmation tone and voice guidance are played, charge the battery. • It takes about 2 hours maximum to fully charge the headphones, about 2.
Charging the battery • When charging, the charging indicator lamp lights and flashes as follows (it may take several seconds for the indicator lamp to light). Flashing in red: Charging Lit in red for 12 seconds and then turns off: Charging complete Quickly flashing in red: Charging error 4. When charging is complete, disconnect the USB charging cable (USB Type-A side) from the computer. 5. Disconnect the USB charging cable (USB Type-C side) from the battery jack on the charging case.
Connecting via Bluetooth To connect the product to a Bluetooth device, the product needs to pair (register) with the device. Pairing a Bluetooth device • Read the user manual for the Bluetooth device. • Place the Bluetooth device within 1 m (3.3') of the product to perform pairing correctly. • To confirm the progress of the pairing process, wear the product while performing this procedure and listen for the confirmation tone and voice guidance. 1.
Connecting via Bluetooth About pairing When connecting a new Bluetooth device, you need to pair it with the product. Once the Bluetooth device and the product are paired, you do not need to pair them again. The product supports multipairing, in which a connection history is saved. However, in the following cases you will need to pair again even if the Bluetooth device was paired once: • If the product is deleted from the Bluetooth device’s connection history. • If the product is sent out for repair.
Using the product The product can use Bluetooth wireless technology to connect to your device and play music, receive phone calls, etc. Use the product for whichever of these purposes suits your needs. Note that Audio-Technica cannot guarantee the operation of displays, such as the battery level display, or applications via Bluetooth devices. Power supply ON/OFF Power supply Operation ON Remove from the charging case and power turns on automatically.
Using the product Wearing the product Insert the side of the product marked "L" (LEFT) into the left ear, and the side marked "R" (RIGHT) into the right ear as shown in the figure. Adjust the position of the headphones so that they fit in your ears securely. Touch sensor areas The product has touch sensors. When performing operations, touch using the pad of your finger, not the fingertip. •• Operate the touch sensor with one finger.
Using the product Listening to music • To connect for the first time, pair the product and your device via Bluetooth wireless technology. If you have already paired the product and your Bluetooth device, turn on the Bluetooth device’s Bluetooth connection before turning on the product. • Use your Bluetooth device to start playback, referring to the device’s user manual as necessary. Touch sensor area (R (right) side) Touch Plays or pauses music. * Touch (twice) Plays the next track.
Using the product Supported codecs The product supports Qualcomm® aptX™ audio (hereinafter aptX) and SBC codecs. When pairing, either the aptX or SBC codec is selected automatically depending on the Bluetooth device being connected. • If a Bluetooth device that supports Qualcomm TrueWireless™ Stereo Plus is connected, aptX is connected automatically.
Using the product Talking on the phone • If your Bluetooth device supports telephone features, you can use the microphone built into the product to talk on the phone. • When your Bluetooth device receives a phone call, a ringtone will be heard through the headphones. • If a call is received while you are listening to music, music playback is paused. When you finish the call, music playback resumes.
Using the product Ear detection The product has a built-in sensor. It can detect when the product is removed from or worn in the ear, and automatically perform operations during music playback and calls. Turning on the ear detection (off at the time of purchase) 1. Long touch (about 6 seconds) the touch sensor area on the L (left) side headphone while music is paused. • A confirmation tone and voice guidance are played. • To turn off this feature again, perform this operation again.
Using the product Auto power off function The product automatically turns off after 5 minutes of not being connected to a device. Also, if you pause the music and do not wear the product for 30 minutes when the ear detection is on, the product turns off automatically. Reset function If the product does not work, or other malfunctions occur, place the headphones in the charging case while referring to "Charging the battery" (p.
Indicator lamps on the headphones The indicator lamp on each headphone indicates the product's status, as explained below. Status Pairing Indicator lamp display pattern White Quickly flashing ( : Gradually lights up) Searching for devices (R (right) side only) Waiting to be connected Flashing Connection Connecting Battery level Battery level low White in the pairing or connection status turns red.
Voice guidance The headphones play English voice guidance in the following situations.
Eartips Eartip size The product includes silicone eartips in 4 sizes (XS, S, M, and L). At the time of purchase, the M-size silicone eartips are attached. To ensure the best sound quality, select the eartip size that is best suited for you, and adjust the eartips inside your ears for a snug fit. It may be difficult to hear bass sounds if the eartips do not fit snugly in your ears.
Troubleshooting Problem Solution Power is not supplied. • Charge the product. Unable to pair. • Confirm that the Bluetooth device communicates using Ver. 2.1+EDR or higher. • Place the product and the Bluetooth device within 1 m (3.3') of each other. • Set the profiles for the Bluetooth device. For procedures on how to set profiles, refer to the Bluetooth device’s user manual. • Remove the pairing information for the Bluetooth device then pair the product with this device again.
Troubleshooting Problem Sound is distorted / Noise is heard / Sound cuts out. Solution • Turn down the volume. • Keep this product away from devices that emit radio waves such as microwaves and wireless routers. • Keep this product away from TVs, radios, and devices with built-in tuners. These devices can also be affected by the product. • Turn off the equalizer settings of the Bluetooth device. • Remove obstacles between the product and the Bluetooth device and place them closer together.
Specifications Headphones Type Dynamic Driver 5.8 mm Sensitivity 98 dB/mW Frequency response 20 to 20,000 Hz Impedance 16 ohms Microphone Type MEMS type Polar pattern Omnidirectional Sensitivity -38 dB (1 V/Pa, at 1 kHz) Frequency response 100 to 10,000 Hz Communication specifications Communication system Bluetooth version 5.0 Maximum RF output 10 mW EIRP Maximum communication range Line of sight - approx. 10 m (33') Frequency band 2.402 GHz to 2.
Specifications Other Power supply Headphones: DC 3.7 V lithium polymer battery/ Charging case: DC 3.7 V lithium-ion battery Charging time Headphones: Approx. 2 hours*1 / Charging case: Approx. 2.5 hours*1 Operating time Continuous transmission time (music playback): Max. approx. 6 hours*1 (headphones), Max. approx. 30 hours*1 (if charging case is used in combination) Weight Headphones: Approx. 4.7 g (0.17 oz) (L side), approx. 4.7g (0.17 oz) (R side) / Charging case: Approx. 49.7 g (1.
