Features: Enjoy music and stay connectedwhile cycling with the M7 Bluetooth-Compatible5.0 Helmet Headset. Featuring Bluetooth5.0-compatible technology, this headset offersa stable connection within 10meters. Designed forcycling enthusiasts, this headset allows you to enjoy music and maintain a safe connection at the same time. Whether you are on a leisurelyride or participating in a cycling event, the M7 Bluetoothcompatible Helmet Headset provides music and navigation guidance for enhanced experience. With its detachable design, the headset can be easily chargedor fitted with additional earpieces, extending its lifespanand convenience for riders. Specifications: BluetoothCompatible Version: 5.0 Battery Capacity: 500mah Charging Voltage 5v Frequency: 2.402-2.480gGhz Standby: 360Hours Usage Distance:approx 10Meters Package Includes: 1Set Headphones 1PC Charging Cable 1PC English Instruction Manual note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.