INEWPRODUCTS Wireless Helmet Bluetooth Headset 5.0, waterproof, For Motorbike, Cycling, Skiing, (INP5H). This helmet headset speaker is 9mm (0.35 inches) thick, built-in 250mah high-capacity lithium-ion battery, a single charge requires only 1.5h can be full, can standby 160 hours

Model: INPM5HBT50

BT Chipset: 5.0

Frequency: 2.402GHz~2.480GHz

Range: 20~30 meters

Li-ion battery: 3.7V 250mA

Charging voltage: 5V

Charging Time: 1.5 hours

Working Hours: 8-10 hours

Standby Time: about 160 hours

Package Includes: Headphone, Charging cable, Manual