Description: Sleeping Headphones: Headphones soothing melody to decompress and aid sleep. The new high-definition audio codec technology can provide 15 times the amount of information of traditional true wireless headphones and present more sound details. 150 hours of super battery life: The earphones continue to listen to songs for 5 hours. The battery in the charging compartment, 400 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. Enjoy the game audio and video synchronization, no need to switch modes, enter the game automatically enter the -low latency state. Compatible with human body design: The different designs of the two ear caps 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: 40mAh Size Chart: Charging Case Size: 6.6x2.1x3.4cm/2.60x0.83x1.34 inch Headphone Size: 1.6x1.6x1cm/0.63x0.63x0.39 inch Package Includes: 2 Pieces Headset 1 Piece Charging Case 1 Piece Charging Cable 1 Pair U-shaped Ear Caps 1 Pair Round Ear Caps 1 Piece Manual