INEWPRODUCTS Wireless Helmet Bluetooth Headset 5.0, waterproof, For Motorbike, Cycling, Skiing, (INPK11). Built-in FM radio, this helmet headset speaker is 9mm (0.35 inches) thick, built-in 450mah high-capacity lithium-ion battery, a single charge requires only 2 hours, can standby 72 hours, Working hours: 8 ~ 10 hours

Model: INPM5DK1150

Color: Black

BT Chipset: 5.0

Frequency: 2.40GHz ~ 2.480GHz

Range: 20-30 Meters (Depending on the device you are using)

Li-ion Battery: 3.7V / 450mA

Charge Voltage: 5V

Charge Time: 2 Hours

Standby Time: 72 Hours

Waterproof level: IP65

Headphone Material: Soft sponge

Working hours: 8 ~ 10 hours

Product weight: 4.2 ounces

Package includes: 1 x Headphones, 1 x microphone and trumpet,1 x charging line, 1 x User manual