2pcs Ks19 Concept Condução óssea Tws sem fio Bluetooth compatível com aparelho auditivo fone de ouvido para smartphones

Description: Name: Bone Conduction Earphone; Bluetooth-compatible version: V5.1 version; 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 earphone size: 15 x 4 x 0.7CM; Bare metal weight: 18 grams; The size of the whole set: 17.5 x 9.6 x 1.8CM; Weight: 50G; Packing list: 1 x Bone conduction earphone 1 x USB charging cable 1 x Instructions Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you dont mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.