Features: 1. Utilizes CSR 4.0+EDR Bluetooth technology for strong signal transmission, ultra-low power consumption, and compatibility with most Bluetooth devices. 2. Supports automatic answer function with option to switch to manual answering; includes a built-in high-quality noise-reducing microphone for effective hands-free calling, answering, and hanging up. 3. High sound fidelity with controls for next/previous track, volume adjustment, play/pause, and redial functions; simple and intuitive operation. Specification: Connection Name: BT Bluetooth Version: V4.2+CSR (updated version, may differ slightly from manual) Transmission Distance: 10M (varies based on environmental conditions and connected device) Bluetooth Pairing Distance: 20-30 meters (depending on the device) Standby Time: 120 hours Play Time: 15 hours Charging Time: 1 hour Battery: 3.7V/500mAh lithium battery Microphone Range: 1 meter Frequency Range: 2402 MHz - 2480 MHz Product Features: - Helmet headset with Bluetooth connectivity - Motorcycle helmet compatible Bluetooth headset - Hands-free communication for motorcyclists - Built-in microphone and speaker for clear audio - Easy-to-use control buttons for music and calls - Lightweight and comfortable design for in-helmet use Package Includes: 1 x Motorcycle Helmet Headset 1 x Charging Cable 1 x User Manual 1 x Microphone Cover 2 x Static Stickers