Feature: 1. There are touch buttons on the outside of the headset. Start, pause, change song, answer/reject call, increase/decrease volume. 2. Two large 40mm drivers adopt surround sound design to reproduce a clear and balanced sound environment. 3. High-definition omnidirectional microphone with noise reduction function to ensure clear voice quality in voice call mode. 4. Folding design, can save space, can be easily put in a backpack or bag for easy carry. 5. Support Bluetooth function, memory card function, 3.5mm audio cable function, radio function. 6. High compatible with mobile phones, tablets, laptops, smart TVs with Bluetooth function, etc. Specification: Item Type: Wireless Over Ear HeadsetModel: OY528 Material: ABS Color: Black and Red Bluetooth Version: 5.0 Bluetooth Distance: Approx. 10m / 33ft Function: Bluetooth Function, MemoryCard Function, 3.5mm Audio Cable Function, Radio Function FM Frequency Band: 87.5-108MHz Battery Capacity: 1200mAh Built-In Lithium Battery Working Frequency: 2.402GHz-2.480GHz Audio Range: 20Hz~20KHz Snr Sensitivity: 108dB±3dB Impedance: 32Ω Working Voltage: 3.7V~4.5V Charging Voltage: 5V 1A Charging Time: 2-3 Hours Working Time: 40 Hours Standby Time: 260 Hours Applicable System: For Android, for IOS, for WINDOWS. Package List: 1 x Headphone1 x USB Cable1 x 3.5mm Audio Cable