Name: Bone Conduction HeadphoneBluetooth-compatible version: V5.2 version; Patent No.: 202130669191.1; Product implementation standard: GB 8898-2011; Battery: 110MAH; Talk time: about 8 hours; Music time: about 8 hours; Communication distance: about 10 meters; Battery type: lithium polymer battery; Supported protocols: HEP/HSP/A2D/AVRCP; Frequency: 20Hz-20KHz; Impedance: 32 ohms; Sensitivity: 85dB/mW; Waterproof grade: IPX 5; Speaker material: copper ring speaker 14.2mm; Appearance material: ABS; Bare metal size: 15x4x3CM; Bare metal weight: 18 grams; The size of the whole set: 17.5x9.6x3CM; Weight: 50G;Packing list: 1 x Bone Conduction Headphone 1 x charging cable 1 x packing box Note: Different displays may cause the color of the item in the picture a little different from the real thing.&nbsp; Manual measuring,please allow 1~3mm error,thank you. <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>

Ks69 Bone Conduction Headphone Noise Reduction Wireless Bluetooth Neck Hanging Headsets With Microphone black