Audio-Technica ATH-CKS50TW Noise-Canceling True Wireless In-Ear Headphones (Black) - Manual (Page 37)

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Specifications
Headphones
Type Dynamic
Driver 9 mm
Sensitivity 110 dB/mW
Frequency response 5 to 20,000 Hz
Impedance 20 ohms
Microphone
Type MEMS type
Polar pattern Omnidirectional
Sensitivity -38 dB (1 V/Pa, at 1 kHz)
Frequency response 100 to 8,000 Hz
Communication specifications
Communication system Bluetooth version 5.2
Maximum RF output 10 mW EIRP
Maximum communication
range
Line of sight - approx. 10 m (33')
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
Supported codec Qualcomm ® aptX ™ Adaptive audio, Qualcomm ® aptX ™ audio, AAC, SBC
Supported content protection
method
SCMS-T
Supported sample rate 44.1 kHz, 48 kHz
Supported bit rate 16 bit, 24 bit [1]
Transmission band 20 to 20,000 Hz