Features: 1. Utilizes the latest 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 and call ending. 3. High sound fidelity with controls for song navigation, 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 (may vary due to environmental conditions and connected device) Bluetooth Pairing Distance: 20-30 meters (varies by device) Standby Time: 120 hours Play Time: 15 hours Charging Time: ≤1 hour Battery: 3.7V/500mAh Microphone Range: ≤1 meter Frequency Range: 2402 MHz - 2480 MHz Product Features: Helmet Headset Bluetooth Helmet Headset Motorcycle Bluetooth Motorcycle Headset Helmet Motorcycle Headset Bluetooth Headset for Helmet Headset Motorcycle Helmet Package Includes: 1 x Motorcycle Helmet Headset 1 x Cable 1 x User Manual 1 x Mic Cover 2 x Static Stickers