Motorcycle Helmet Earphone Handsfree Bluetooth-compatible 5.0 Music Headphone Voice Control Wireless Headset Waterproof with Mic

Hign-concerned Chemical : None Support intercom : YES Item Weight : 230g Item Height : 20 mm Item Width : 43 mm Item Length : 93 mm Model Name : Motorcycle Helmet Headset Applicable Helmet Type : Universal Special Function : waterproof,Voice Control Power Supply Mode : Built-in Battery Connection Mode : bluetooth Maximum Number of Speakers : 2 Brand Name : Shunmaii Certification : none Origin : Mainland China Item Type : Helmet Bluetooth headset Origin : Mainland China Material : ABS Colour : black Bluetooth-Compatible version : 5.0+EDR Frequency range : 2.402GHz-2.480GHz Transmission distance : 10 metres (varies by device) Microphone transmission distance : ≤1 metre Lithium battery : 3.7V/1000mA Continuous working time : about 40 hours Charging voltage : 5V