Sleeping Headphones: Headphones soothing melody to decompress and aid sleep. Wearing without feeling: Mini body design of headphones, compact fit, invisible and not revealing, lying on the side without rubbing ears. Listening to music and watching videos is more comfortable. 150 hours of super battery life: The earphones continue to listen to songs for 4-5 hours. The battery in the charging compartment, 350 mAh, can charge the headset more than 4-5 times. In ear noise isolation design: airtight fit, block external noise and relieve fatigue. Suitable for lunch break and night sleep. Compatible with human body design: Headphones conform to most ear types, so that your earphones can be firmly attached to your ears and not easy to fall off. Specification: High End Solution: 5.2+EDR Signal Transmission Channel: CASSL2 RF Transmit Power: 90DB Microphone Sensitivity: 42DB Transmission Range: 10-15M Transmission Rate: 24MBPS Call Time: 4-5 hours Listening Time: 4-5 hours Input Voltage: DC5V-1A Standby Time: 150h Headphone Battery: 35mAh Size Chart: Charging Box Size: 5.5x5.5x3cm/2.17x2.17x1.18inch Headphone Size: 1.6x1.6x1cm/0.63x0.63x0.39inch Package Includes: 1 Pair Earphone 1 Piece Charging Box 1 Piece Charging Cable 1 Pair U Shape Ear Hat