• Bluetooth-compatible 5.0 Stable Transmission: Using Bluetooth-compatible 5.0 technology standard, wider coverage, faster speed, lower power consumption
• Long Battery Life: the headset built-in 450mAh large capacity Lithium battery, no need to charge the headset frequently, it can satisfy your day's use
• Helmet headphone is Dustproof and waterproof, which is durable without fear of wind and rain
• Comes with FM, not only a headset but also as an FM radio, you can automatically search for radio stations
• Helmet Headset Application Range: climbing, rock climbing, skiing, cycling, etc. or outside sports

Specifications:

• BT version: 5.0
• Frequency range: 2.402GHz~2.480GHz
• BT distance: 20~30m (depending on a mobile phone)
• Lithium battery capacity: 3.7V/450mAh
• Charging voltage: 5V
• Working time: 23 hours (according to usage conditions)
• Charging time: about 2 hours
• Standby time: about 360 hours