Bluetooth 5.3 Airplane Airline Flight Adapter Wireless Transmitter Support Encoding SBC, AAC, MSBC Headphones 2020KHz Bt chip ATS2851 Bt version 5.3 Support encoding SBC, AAC, mSBC Support protocols HFP, HSP, A2DP, AVRCP Power consumption 12-18mA Distortion THD (1KHz) ≤ 1% Frequency response 2020KHz Operation mode (touch, button) button Audio input Ф 3.5mm plug stereo, mono Bt wireless one to two connection support Antenna type (FPC, ceramic) ceramic Connection distance ≥ 10 meters Battery capacity 3.7V 200mAh Playback time (dual playback) 9-10h Charging time ≤ 1 hour Main material (shell) ABS Weight (g) approximately 14.3g Size (mm) 57 * 45 * 12 Packaging includes 1 * Bt receivert