Equipped with Bluetooth 5.3 technology for a stable and efficient wireless connection, ensuring seamless audio streaming while cycling. Long-lasting battery capacity of 3.7V/1000mAh, providing up to 30 hours of music playback and 22 hours of call duration. Designed specifically for cycling helmets, with a compact size of 89*56*21mm and a construction of only 194g for hard wheat. Impressive intercom range of 600 meters in open environments, allowing clear communication with cyclists. Music sharing capability within 30 meters for 2 people, enhancing the riding experience by enjoying music together. The G1 Bluetooth Headphones for Cycling Helmets are engineered for cyclists who value both performance and convenience. With advanced Bluetooth 5.3 technology, these headphones a reliable connection for music and calls. The robust battery life allows for extended use, making them perfect for long rides. Their and compact design fits seamlessly into cycling helmets, while the intercom feature enables easy communication with riders. Enjoy the freedom of music sharing, making every ride more enjoyable. Color: Black Material: plastic Package Contents: 1X Motorcycle Helmet Headset Kit 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.