Bluetooth-compatible Sleeping Headphones Headband Soft Elastic Comfortable Wireless Music Earphones Eye Mask Sleep Headphones Bluetooth technical parameters: 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 Product packaging information weight: 80g Specifications: 2-in-1 Bluetooth mask and headset-not only a 3D lampshade for blocking light, but also a wireless Bluetooth headset that can make hands-free calls and music wirelessly. Very practical for travel or home use. Super Comfortable 3D Eye Mask - This eye mask designed with a soft nose piece on the inner side which effectively prevents light from entering and provides a completely dark environment for light sleepers. A large 3D space brings 0 pressure to your eyes. Premium fabric for skin providing you with the best user experience, so you won't feel uncomfortable even if you wear it for a long time. Perfect for side sleepers - built into two ultra-thin speakers on both sides of the eye mask, you won't feel uncomfortable even if you sleep on your side. The speakers can