Feature:1. Ipx6 is sweatproof and rainproof, not afraid of accidents, sweat like rain, double-layer network structure to the block, nano-hydrophobic coating to prevent sweat from penetrating. (Note: Electronic products are prohibited from touching hot water, and do not soak in water for a long time) 2. The new generation of wireless Bluetooth-compatible 5.3, the connection is stable, no interference, the signal is enhanced to transmit the signal, the transmission is more stable and faster, and the anti-interference ability is stronger. Product Name: Bone Conduction Earphone Model: M-1S Wireless Bluetooth-compatible version: V5.3+EDR Horn type: bone conduction vibrator Frequency: 20Hz-20KHz Impedance: 32 ohms Sensitivity: 85dB/mW Waterproof grade: IPX6 Playing time: about 7 hours Battery capacity: 150MAH Standby time: 150 hours Charging time: 90 minutes Frequency band: 2.4GHZ Bluetooth-compatible protocol: A2DP1.3AVRCP1.5 HFP Bare metal weight: 23G Packing list: Bone Conduction Earphone x 1 Charging Cable x 1 Instruction x 1 Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don&#39;t mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks. <div class="panel panel-info"><div class="panel-heading" style="font-weight:bold;">IMPORT: THIS ITEM IS SHIPPED FROM CHINA. PLEASE EXPECT UP TO 25 DAYS FOR DELIVERY</div></div>

M1s Wireless Bluetooth Earphone Bone Conduction Stereo Noise-canceling Dual Microphones Headset Black