Bluetooth sleep headphones feature a soft headband design with wireless sleep headset inside, allow you to enjoy hands free music, and protect you from being disturbed by your mess hair and sweat. Sleeping headphones sports headband is perfect suitable for nap, air travel, gym, workout, running, yoga as well as sleeping. Bluetooth headband headphones is the cool tech gifts for men/ women/ family/ teens/ friends. Specification: Bluetooth version: 5.0 Bluetooth transmission distance: 10M Music playing time: Maximum sound 7h, medium volume 10 hours Microphone distance: 1m Bluetooth standby time: 72h Battery capacity: 150mA / h Battery power: 0.55w Horn impedance: 32 ohm Horn power: 0.02w Frequency range: 2.4-2.4835ghz Sensitivity: 45dB Transmitting power: 6dB Audio output distortion: 0.6% Audio output SNR: 93dB Charging time: 1-2 hours Maximum input voltage: DC 5V Maximum input current: 150mah Maximum input power: 0.55w weight: 80g Size: 27cm * 10cm Packaging: Bluetooth headPhones, manual, charging cable. Features: Bluetooth headband headphones is made of durable braided cord and offer a breathable mesh lining, extremely stretchable, fit most head size, what is more, it's incredibly soft and hypoallergenic. Sleep headphones bluetooth built-in 2 ultra-thin speakers, devices control module is in the middle of bluetooth sleep headband, no press the ears. Sleeping headphones are comfortable enough to wear while lying down or sleeping on your side. Choose sleeping bluetooth headphones, fall asleep fast, stay asleep and have a sweet dream, they block out ambient noise without using earplugs that are painful and fall out. Our bluetooth headphones built-in advanced rechargeable lithium battery, which can work more than 10 hours and 2-2.5 hours charging time only. Bluetooth sleep headphones feature Bluetooth 5.0 version with quality chip, fast paring speed, less power consuming,ensure stable clear sound and lossless music even the headphones are in the sports headphones.