1. It has the characteristics of clear voice, convenient mobile communication, strong anti-interference ability, etc., and is widely used in radio communication. 2.: IPX6 waterproof, compact structure, can protect the internal circuit from dust intrusion, and provide deep double protection for internal parts in harsh rainwater environment, so that the fun of motorcycle travel will not stop. 3. Using 5.0 powerful chips, the battery capacity is larger and the power consumption is lower. After multiple optimized circuit schemes, a current loop is formed for recycling during standby, and the standby time is longer. 4. Built-in 1200mAh battery, equipped with an upgraded smart chip, power consumption is reduced by 35%, no longer troubled by frequent charging of earphones with small batteries, 5. Easy to install, suitable for many types of helmets on the market. Name: helmet bluetooth headset Talk time: 25 hours Standby time: 240H Charging time: 2H Battery capacity: 3.7V/1200mAh Bluetooth version: 5.0 Waterproof grade IPX6 Dimensions: 80 x 44.5 x 27mm Material: ABS+PC Colour:A: Black Package Contents: 1 x headphone 1 x Earphone Hardwire Microphone 1 x data cable 4 x Nylon Sticker 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.