TWS Wireless Bluetooth Headphones For iPhone, Samsung & Huawai. Bluetooth version: Bluetooth V5.2 •Battery specification: Headset 3.7V/45mAh; Charging box 3.7V/280mAh •Support mode: HFP/HSP/A2DP/AVRCP •Sensitivity: 105dB = 3dB S.P.L at 1KHz • Transmission distance: 10 meters (in an ideal environment without any major obstacles) •Play time: About 2.5 hours •Call time: About 3 hours •Standby time: About 80 hours •Charging time: Charge the charging compartment for about 1.5 hours, and charge the headset for about 1 hour Charging box to charge the headset: About 2.5 times
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