Using advanced Bluetooth-compatible 5.0 chip, it supports multiple protocols, stable transmission, hands-free calls and super compatibility. Featured with adjustable headband and folding design, the headphone is comfortable to wear and convenient to carry on vacation or business trip. It is made of high-quality ABS material, which is lightweight and comfortable. The length of the product is 16cm, the width is 8cm and the height is 4cm. It has wide compatibility, and is compatible with all Bluetooth-compatible devices. You can freely control the switch between the previous song and the next song, pause the music, answer the call, end the call, reject the call, increase and decrease the volume. Item Name: Bluetooth-compatible Headphone Material: ABS Model: Y08 Audio Input: 3.5mm Jack Type Speaker Sensitivity: 1053dB Speaker Power: 25mW Speaker Frequency Range: 20Hz-20KHz Impedance: 24 Microphone: Support Microphone Frequency Range: 30Hz-16KHz Microphone Sensitivity: -583dB Bluetooth-compatible Version: V5.0 Transmission Protocol: EDR+A2DP Transmission Coding: SBC Noise Reduction Technology: DSP+AEC Frequency Range: 2.402-2.480GHz Effective Transmission Distance: 10 Meters Transmit Power: 5dBm Battery Capacity: 150mAh (Included) Charging Current: 5V500mA Charging Time: