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. Cautions for the product • Do not use the product near medical equipment. Radio waves may affect cardiac pacemakers and medical electronic equipment.
Safety precautions Cautions for rechargeable battery The product is equipped with a rechargeable battery (lithium polymer battery). • If battery fluid gets into eyes, do not rub them. Rinse thoroughly with clean water such as tap water and consult a doctor immediately. •...
Notes on use • 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. •...
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About water-resistant (drip-proof) performance • The water-resistant (drip-proof) performance is designed to protect the headphones if they get wet from rain, etc. (equivalent to IPX2). JIS/IEC protection grade IPX2 means that the headphones are protected against water droplets falling from above at a 15-degree angle. The headphones cannot be used in hot and humid places, such as bathrooms.
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 and the Bluetooth device.
Part names and functions Headphones Housing Left/right (L/R) indicator Bushing Magnetic clasp Neckband Microphone (for calls) Protrusion The left bushing has a protrusion for distinguishing between the left and right.
Part names and functions Remote controller Power supply / control button Use to turn the power supply ON/OFF, play/pause music, and answer phone calls. Indicator lamp Displays the operating status and battery level of the product. Volume buttons Use to adjust the volume up or down (+/–). Battery jack Use to connect the included USB charging cable and charge the product.
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Part names and functions Accessories USB charging cable (30 cm (12"), USB Type-A / USB Type-C) Eartips (XS, S, M, L) At the time of purchase, the M-size eartips are attached to the product. Magnetic clasp The magnetic clasp is attached to the main unit at the time of purchase.
Charging the battery • Fully charge the battery when using for the first time. • When the rechargeable battery is running low, the voice guidance will play the message “Low battery”, and the indicator lamp will flash in red. Charge the battery as soon as possible. •...
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Charging the battery • If you start to charge while the product is on, it will automatically turn off. • When charging, make sure to use the included USB charging cable. The product may not charge with cables other than the included USB charging cable.
Power supply ON/OFF Turning on the product Press and hold the power supply / control button (for about 3 seconds). The indicator lamp lights in white, and then flashes. Voice guidance is played. • It may take several seconds for the indicator lamp to light. •...
Use your Bluetooth device to begin the pairing process and search for the product. When your Bluetooth device finds the product, “ATH-CKS330XBT” will be displayed on the device. • For information about using your Bluetooth device, refer to the device’s user manual.
Connecting via Bluetooth Multipoint function The product supports multipoint, which allows two Bluetooth devices to be connected at the same time. While you are listening to music with one device, you can answer a call that comes in from the other device. It is convenient if you have two smartphones, for example.
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. • When you are not using the product, you can use the included magnetic clasp to hold the left and right cables together.
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. Listening to music •...
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Using the product Power supply / control button operation Power supply / control button Operation Function Press Starts or pauses playback. Depending on the connected device, activates the device’s Press (twice) speech recognition function (such as Siri for compatible iOS devices).
Using the product Talking on the phone If your Bluetooth device supports telephone features, you can use the product to talk on the phone. Turn on the product and insert the product in your ears. Make/receive calls with your Bluetooth device. •...
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Using the product Power supply / control button operation Power supply / control button Operation Function Answers the call. Press Ends the call. Rejects the call when pressed and held. Press and hold (about 2 seconds) When pressed and held during a call, the call switches between the product and your Bluetooth device.
Using the product Low latency mode Low latency mode reduces sound delay when playing games or watching videos. • Bluetooth communication can be easily affected by obstacles and radio wave conditions. Press the power supply / control button three times in a row. With every three presses, the voice guidance will play the message “Low latency mode”...
Voice guidance The product plays English voice guidance in the following situations. Situation Voice guidance Voice guidance varies depending on the battery level. Battery level high Power is turned on Battery level medium Battery level low Bluetooth is connected Bluetooth connected Bluetooth is disconnected Bluetooth disconnected Low latency mode ON...
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Cleaning Get into the habit of regularly cleaning the product to ensure that it will last for a long time. Do not use alcohol, paint thinners, or other solvents for cleaning purposes. • Use a dry cloth to clean the headphones. •...
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.
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Forced pairing mode / reset If the product does not connect to a device (forced pairing mode) If pairing cannot be canceled or is not successful, you can use forced pairing mode to perform pairing again. Press and hold (about 6 seconds) the volume buttons (+/–) at the same time. The product will switch to the “searching for devices”...
Troubleshooting 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.
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Troubleshooting Cannot hear the voice of the caller / Voice of the caller is too quiet • Turn on the power of the product and the Bluetooth device. • Turn up the volume on the product and the Bluetooth device. •...
Specifications Headphones Type Dynamic Driver 5.8 mm Sensitivity 98 dB/mW Frequency response 5 to 30,000 Hz Impedance 16 ohms Microphone Type Electret condenser Polar pattern Omnidirectional Sensitivity -44 dB (1 V/Pa, at 1 kHz) Frequency response 100 to 10,000 Hz Communication specifications Communication system Bluetooth version 5.0...
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Specifications Other Power supply DC 3.7 V lithium polymer battery Charging time Approx. 2 hours Operating time Continuous transmission time (music playback): Max. approx. 20 hours Weight 24 g (0.85 oz) Water-resistant (drip-proof) IPX2 performance Operating temperature 5°C to 40°C (41°F to 104°F) Accessories USB charging cable (30 cm (12"), USB Type-A / USB Type-C), Eartips (XS, S, M, L), Magnetic clasp...
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Trademarks • The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any use of ® such marks by Audio-Technica Corporation is under license. Other trademarks and trade names are those of their respective owners. •...
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