Description: Bluetooth specification:V5.0+EDR/A2DP/AVRCP/HFP Frequency range:2.4026GHz-2.480GHz Transmission distance:20 meters or more Channel:Stereo Speaker parameters:32 ohms / 30mm Speaker power:10 mW*2 Signal to noise ratio:104dB Microphone intercom Play time:13 hours (for compatible with apple mobile phone volume test) Talk time:14 hours or more Standby time:350 hours or more Charging time: 2 hours or so Packaged size:18*8.5*3cm Package included: 1*Bluetooth headset 1*Sleep scarf 1*USB charging cable 1*Instruction manual Features: Brand new new and high quality Bluetooth 5.0, the latest Bluetooth V5.0 chip, high-fidelity stereo, the effect is shocking, the call is clear and stable. Can be removed for cleaning. Ultra low power consumption, continuous playback of music for 13 hours (for compatible with Apple 7 mobile phone maximum volume test). The transmission rate is fast and stable, and the unblocked transmission distance is more than 20 meters, up to 50 meters. English voice prompts for power on, power off, pairing success, low battery, maximum volume, etc. The iOS system can display power and activate the SIRI Smart Voice Assistant. Side zipper design, can be equipped with hot/cold dual-use ice packs. NEW DESIGN-We listen to your feedback, after long-term research and data, we updated every details and make better wireless music sleep headphones eye mask to fit you. PERFECT PARTNER FOR SLEEPING-The Sleep headphones mask adopted 3D ERGONOMIC TECHNOLOGY for eyes area and block out 100% of light to create absolute dark zone and listen to music without wearing additional headphones for you sweet deep sleep, great solution to the problem sleeper. Perfect for home, office, air travel, business strip, relaxation, mediation and insomnia. BLUETOOTH 5.0 STEREO SOUND-Featuring Updated BLUETOOTH 5.0 technology, stable connectivity and smooth transmission in high speed and long distance with low consumption for great stereo sound experience. Built-in adjustable high quality speaker and microphone for handfree and clear call. Sleeping mask can be WASHABLE you can take out the bluetooth moudle and wires out. Recommend to wash the mask by hand with warm water. ULTRA SOFT&GREAT FOR SIDE SLEEPER-Sleep headphones bluetooth sleep mask is designed with breathable material and comfortable feel, BREATHABLE SLOW-REBOUND MEMORY SPONGE and smooth fabric let you release your facial stress and help get into sleep rapidly. Bluetooth control on the middle and is perfectly fit for side sleeper. UPDATED BATTERY-Built-in the premium high-performance battery Charge about 2-2.5 hours, provide more than 8 hours playing time, won’t be waked up at night, You can sleep peacefully all night