SHOKZ SHOKZ Bone Conduction Earphones SHOKZ OPENRUN Bone Conduction Headphones Black S803 Charging method is magnetic induction. Please consider only if you understand that this is a home storage by an amateur. For security reasons, returns are not accepted. 【Specs】 ・Speaker Type: Bone Conduction ・Battery Life: Up to 8 hours ・Weight: (approx.) 26 g ・Sensitivity: 105 ± 3dB ・EQ Function: 2+ ・Charging Time: 1.5 hours ・Maximum Operating Time: Up to 10 days ・Battery Capacity: 160mAh ・Charging Port: Magnetic Induction ・Maximum Charging Voltage: 5V ± 5% ・Material: Full Titanium ・Moisture Detector: Equipped ・Frequency Range: 20Hz~20kHz ・Microphone Sensitivity: -38dB ± 3dB ・Multi-pairing: Equipped ・Wireless Range: 10m ・Compatible Codec: Supports SBC ・Waterproof & Dustproof Standard: *IP67 waterproof (excluding swimming) ・Supported Profiles: A2DP, AVRCP, HSP, HFP ・Quick Charge: 1.5 hours of use with a 10-minute charge. ・Bluetooth Version: Bluetooth V5.1 ・Command Control: Multi-function button, volume button ・Microphone Type: Dual Noise Canceling Microphone