Features: 1. Utilizes the latest CSR 4.0+EDR Bluetooth technology, providing strong signal transmission, ultra-low power consumption, and compatibility with most Bluetooth devices; 2. Supports automatic answer function, can be switched to manual answering, safe and convenient; built-in high-quality anti-interference microphone for effective hands-free calling, answering, and hanging up; 3. High sound fidelity, supports track navigation, volume control, play/pause, and automatic redial functions, easy to operate. Specification: Connection Name: BT Bluetooth Version: V4.2+CSR (updated version, may differ slightly from manual) Transmission Distance: 10M (may vary due to environmental factors and mobile device Bluetooth capabilities) 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 Microphone Range: 1 meter Frequency Range: 2402 MHz - 2480 MHz Product Features: Helmet Headset with Bluetooth Motorcycle Helmet Headset Bluetooth Headset for Motorcycle Helmets Wireless Helmet Communication System Hands-Free Calling for Riders Package Includes: 1 x Motorcycle Helmet Headset 1 x Charging Cable 1 x User Manual 1 x Mic Cover 2 x Static Stickers