True Wireless Invisible Noise Cancellation Bluetooth Headset For Sleeping Skin : Headphones for : headphones soothing melody for decompression and sleep support Wearing without feeling: mini headphones, compact fit, invisible and non-discovery, lying na side without rubbing ears Listening to music and watching movies is more convenient 150 hours super work na battery: headphones listen to songs for 4-5 hours in the charging chamber, 350 mAh, can charge the headset more than 4-5 Sound insulation design in : tight fit, blocking external noise and relieving fatigue Suitable na lunch break and night sleep Human body compatible: The headphones are designed to fit most ear types, so the headphones can be attached to your ears and not easily fall off Specification: High-end solution: 5.2 EDR Signal Transmission Channel: CASSL2 Transmission Power: 90DB Microphone Sensitivity: 42DB Transmission range: Transmission Rate: 24 MBPS Conversations: 4-5 hours Listening: 4-5 hours Input Voltage: DC5V-1A standby: 150h Headphones: 35 mAh sizes: Charging box size: 5.5x5.5x3 cm/2.17x2.17x1.18 inch Headphone Size: 1.6x1.6x1 cm/0.63x0.63x0.39 inch contains: 1 pair of headphones 1 case with charging function 1 charging 1 pair of U-shaped ear cups