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ATH-CKR300BT Wireless In-Ear Headphones

ATH-CKR300BT Wireless In-Ear Headphones


  • Bluetooth wireless technology with in-line mic and controls for answering/ending calls, controlling music & video playback, controlling volume, and accessing voice assistant on Bluetooth wireless devices
  • High-performance 9.8 mm drivers for rich, wide-range sound reproduction
  • The compact housings are designed to provide a comfortable fit for ears of all sizes
  • Top-mounted PCB maximizes airflow within the housing, enhancing performance for more accurate sound reproduction
  • IPX2 water-resistant performance protects headphones from dripping water, such as rain and sweat
  • Internal lithium polymer battery provides 8 hours of continuous use on a full charge, and recharges in just 2 hours
  • To prolong battery life, the headphones automatically turn off if left unconnected to a device for 5 minutes or in “waiting to be connected” status for 30 minutes
  • The headphones are equipped with a USB-C battery jack to improve charging time
  • Headphones provide voice confirmation (in English) of power on/off, Bluetooth connected/disconnected, and low battery level
  • Multipoint pairing function allows you to stay connected to two Bluetooth devices at once
  • Compatible with AAC codec for high-quality sound and low latency
  • Includes silicone eartips (XS/S/M/L), 30 cm (12") USB-A/USB-C charging cable, and carrying pouch
  • Available in black (ATH-CKR300BTBK), gray (ATH-CKR300BTGY), and blue (ATH-CKR300BTBL)


Type Dynamic
Driver Diameter 9.8 mm
Frequency Response 5 – 30,000 Hz
Sensitivity 102 dB/mW
Impedance 16 ohms
Battery DC 3.7 V lithium polymer rechargeable battery
Battery Life 8 hours continuous use
Weight 13.5 g (0.5 oz)
Charging Time Approx. 2 hours
Microphone Type MEMS type
Microphone Sensitivity -42 dB (1V/Pa, 1 kHz)
Microphone Frequency Response 50 – 4,000 Hz
Microphone Polar Pattern Omnidirectional
Accessories Included Silicone eartips (XS/S/M/L), 30 cm (12") USB-A/USB-C charging cable, and carrying pouch
Notes RF Output: 10 mW EIRP
Frequency Range: 2.402 GHz to 2.480 GHz
Compatible Bluetooth Profiles: A2DP, AVRCP, HFP, HSP
Support Codec: AAC, SBC
Supported content protection method: SCMS-T
Transmission band: 20 to 20,000 Hz
Bluetooth® Version Bluetooth Version 5.0
Operating Range Line of sight - approx. 10 m (33')


ATH-CKR300BT Caution Guide
ATH-CKR300BT Quick Start Guide
ATH-CKR300BT User Manual