Description: Voice control can be achieved through various buttons, volume +/ , up/down song switching, answering calls, play / Pause,Support 3.5mm audio interface. Good noise reduction function,enjoy wireless high quality music even if you dont have connected. The earphone is made of rubber oil. It has a design, smooth feel and full atmosphere. Sealed earmuff design, effectively blocking external noise. Foldable design, adjustable size, high applicability.It is a suitable for travel at home. Specfications: Product Type: head mounted Function Function Use: Wireless headset, voice headset Bluetooth version: V5.0 Bluetooth mode support: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 Frequency: 2.402 2.480GHZ, 2.4G ISM band RF performance: Receive sensitivity: 84dBm; Transmit power Frequency response: 20 Hz 20 KHz Signal to noise ratio (SNR): 70Db; Total harmonic distortion rate (THD): 0.1 Percent Power indicator: blue light Headphone charging: rechargeable 400MAH lithium battery Charging port: mini 5 pin USB charging interface Features: Size: 17.5x9x13CM Normal charging time: about 3 hours Call duration: up to 10 hours Use time: 4 5 hours Standby time: 250 hours Other features: Support status indicator, charging indicator display Package Including: 1x headphones 1x USB charging cable 1x manual Note: The color may be a little different from the photos because of the computer monitor's color setting or other reasons.