Features: 1. Utilizes Bluetooth 4.2+EDR technology for strong signal transmission and low power consumption, compatible with most Bluetooth devices. 2. Supports automatic answer function with option to switch to manual answering. Built-in high-quality noise-reducing microphone enables convenient hands-free calling and call ending. 3. High sound fidelity with controls for volume adjustment, track navigation, play/pause, and redial functions for easy operation. Specification: Connection Name: BT Bluetooth Version: V4.2+CSR Transmission Distance: 10 meters (may vary due to environmental conditions and device compatibility) 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 Distance: ≤1 meter Frequency Range: 2402 MHz - 2480 MHz Product Features: Helmet Headset Bluetooth Helmet Headset Motorcycle Bluetooth Motorcycle Headset Helmet Motorcycle Headset Bluetooth Helmet Motor Bluetooth Headset 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