Wireless Bluetooth 5.0 Stereo Eye Mask Headphones Earphone Sleep Music MaskFeatures:Bluetooth specification: V5.0 EDR / A2DP / AVRCP / HFPFrequency range: 2.4026GHz-2.480GHzTransmission distance: more than 20 metersChannel: stereoSpeaker parameters: 32 ohms / 30mmSpeaker power: 0.5W * 2Signal to noise ratio : 104dBFunction: previous track, next track, volume up, volume down, play, pause, answer a call, make a call, activate SIRI, microphone intercomPlay time: 7 hoursTalk time: more than 8 hoursStandby time: more than 260 hours (actual test)Charging time: about 2 hoursStandby time: 500 days (standby time after fully charged. And the headset can be turned on without charging after 500 days of standby!)Description:The latest Bluetooth V5.0 chip, high-fidelity stereo, powerful bass effect, clear and stable calls.Ultra-low power consumption, continuous music playback about 7 hours.The transmission speed is fast and stable, and the unobstructed transmission distance exceeds 20 meters.There are English voice prompts for power-on, power-off, successful pairing, low battery, and maximum volume.The battery can be displayed and the SIRI intelligent voice assistant can activate.The headband is made of high-quality nylon cation, not fade, not shrink, not deform, double-layer design, high-end fashion, light and thin.After fully charged, the static standby time of the Bluetooth headset is up to 500 days! (The headset can be turned on after 500 days of standby!)Package Includes:1 x Bluetooth headband1 x USB charging cable1 x manual