Introduction Thank you for purchasing this Audio-Technica product. Before using the product, read through this user manual to ensure that you will use the product correctly. Please keep this manual for future reference. Safety precautions Cautions for the product Read these cautions before using the product. To ensure safety, observe all warnings and cautions while using the product.
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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 • Do not use, leave or store the battery in the following places: –...
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Notes on use • Be sure to read the connected device’s user manual before use. • Make sure to hold the plug when connecting and disconnecting the USB charging cable. The USB charging cable may become severed • Audio-Technica will not be liable in any way for any loss of data in or an accident may occur if you pull on the cable itself.
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Part names and functions ■ Headphones Housing The left bushing has a protruding part. Eartips LEFT/RIGHT (L/R) indicator Bushing ■ Bluetooth and NFC ® transmitter/receiver N-Mark Shows the location for detecting NFC. Battery jack Connect the included USB charging cable to charge. ■...
Charging the battery • Fully charge the battery when using for the first time. • When the rechargeable battery is running low, the product will sound 2 sets of 2 beeps through the headphones, and the indicator lamp will flash in red. When these beeps sound, charge the battery. •...
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2. Use your Bluetooth device to begin the pairing process and search for the product. • For information about using your Bluetooth device, refer to the device’s user manual. 3. When your Bluetooth device finds the product, “ATH-CKS550BT” will be displayed on the device.
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Connecting via Bluetooth wireless technology Using NFC when pairing NFC (Near Field Communication) is a technology that allows for short-range wireless communication between various devices, such as mobile phones and IC tags. It allows two devices to communicate when you simply touch them to each other.
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Indicator lamp display The indicator lamp of the product indicates the product’s status as explained below. Status Indicator lamp display pattern Blue Pairing Searching for device Waiting to be connected Connection Flashing Connecting Battery level Battery level low Charging Charge Fully-charged...
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 compatible operation with connected Bluetooth devices. Power supply Slide the power switch to the ON or OFF position.
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Using the product Listening to audio • To connect for the first time, pair the product and your device by using either the Bluetooth wireless technology or NFC. If you have already paired the product and your Bluetooth device, turn on the product and turn on your device’s Bluetooth connection.
Using the product Taking a phone call • If your Bluetooth device supports telephone features, you can use the product to talk on the phone. • When your Bluetooth device receives a phone call, the product sounds a ring tone. •...
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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. Headphones, remote control with mic, and Bluetooth and NFC transmitter/receiver To clean, wipe with a dry cloth.
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Eartips Eartip size and position 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 in the standard position. The eartips can also be adjusted to 2 different positions. To ensure the best sound quality, select the eartip size and position that is best suited for you, and adjust the eartips inside your ears for a snug fit.
Troubleshooting Problem Solution Power is not supplied. • Charge the product. • Devices that communicate using Bluetooth Ver. 2.1+EDR or higher can be used Unable to pair. with the product. • Place the product and the Bluetooth device within 1 m (3.3') of each other. •...
Specifications Communication specifications Communication system Bluetooth version 4.1 Bluetooth Specification Power Class 2 Output 1.3 mW EIRP Maximum communication range Line of sight - approx. 10 m (33') Frequency band 2.4 GHz (2.402 GHz to 2.480 GHz) Modulation method FHSS Supported Bluetooth profiles A2DP , AVRCP , HFP , HSP Supported codecs...
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