Open Ear Bluetooth Headset Air Conduction Headphones Wireless Earphones Sports

Item specifics : Brand : Unbranded Colour : Black Connectivity : Bluetooth Features : Built-in Microphone, Call functions, HD Voice, Rechargeable Battery, Semi-Open Back, Waterproof, Wireless Form Factor : Ear-hook Manufacturer Warranty : 1 Year Microphone Type : Built-In Model : Headphones MPN : OWS Open Ear Bluetooth Headphones Number of Earpieces : Single Suitable For : Left Ear Type : Earbud (In Ear) Wireless Technology : Bluetooth Description : Description. brand new and high quality Features. Net weight: 28g Main Parameters: Model No.: K9 Bluetooth headset (silicon microphone HD call effect) Bluetooth programme: Bluetooth V5.3 Product speaker: 16 speakers (bass effect is obvious) standby time: 800 hours Working time: 8 hours Charging time: about 1 hour Communication distance: barrier-free 10-15 metres Headset battery capacity: 90 mAh (pure cobalt battery) Frequency: 20Hz-20KHz Impedance : 32 ohms Sensitivity ： 85dB/mW Waterproof rating ： IPX 4 Package Included Earphone x1 USB charging cable x1 Instruction manual x1