BestGot Wireless Headphones Created with a Unique Design, BestGot Headphones features a stylish look and acoustic features to maximize the sound range. We appreciate your choice of BestGot headphones, before use, please read this user manual carefully and keep for future reference. If you need technical support for any problem, please get in touch with us on email. In the box 1. BestGot BT6002 wireless headphones 2. 3.5mm Audio cable 3. Micro-USB charging cable 4. User manual Specifications: Product type: Bluetooth Headset Wear style: Head wear Connection: Bluetooth & AUX Range: 33 feet (10 meters) Power indicator: Blue light and Red light Battery capacity: 420mAh Normal charging time: About 3 - 4 hours Playback time: Around 15 - 20 hours Talk time: Around 15 - 20 hours Standby time: Around 400 hours Microphone sensitivity: 38dB Directivity: Omnidirectional Microphone Impedance: 2.2KΩ Working Temperature: -10° — 60° Speaker Diameter: 40mm Speaker Impedance: 64Ω Frequency Range: 20-20kHz Input Voltage: 5V Input Current: ≥1A Power: ≤20mW