New M99 Bluetooth Headset V5.2 With Long Standby Time, In-Ear Design, Super Large Battery, V9 Upgraded Business Version

--Congratulations on finding the source manufacturer-- Factory direct sales, price advantage, processing with supplied materials, first-hand supply, honest service Supports mixed batch orders, available in stock, ample inventory, stable quality, supports OEM/ODM Our factory specializes in creating high-quality product supply chains for cross-border e-commerce customers, providing comprehensive pre-sales and after-sales services, and providing product images and specifications Provide high-quality and stable products, support small-batch and multi-batch orders, and have no threshold for retail distribution We welcome wholesalers, traders, retailers, Taobao, Tmall, Amazon, EBAY, AliExpress, and others to discuss business and explore cooperation! We welcome new and existing customers to visit us for guidance, factory inspection, and product inspection! Parameters: Bluetooth version: V5.2+EDR Distance: 10m Talk time: Approximately 100 hours Music playback time: Approximately 88 hours Headphone battery: 350mAh Wireless frequency: 2.4GHz Supported protocols: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10m Charging Voltage/Current: 5V/1A Charging time: approximately 2 hours Standby time: 2220 hours Speaker impedance: 8MM 32; Microphone sensitivity: -42Db Operating temperature: -10 to 50℃ Complete set packaging size: 14.3*9*2.5CM Complete set weight: 46G Headphone weight: 15.2g Headphone size: 8.2*4.8*2.2CM