Feature:1. Super Thin Design: These wireless ear clip headphones feature a super thin design, making them comfortable to wear while sleeping or during daily activities.2. Bluetooth 5.3 Technology: With the latest Bluetooth 5.3 version, these headphones provide a stable and fast connection, ensuring excellent sound transmission.3. Long Transmission Distance: The headphones have a transmission distance of up to 10 meters, allowing you to move freely without worrying about signal loss.4. Wide Frequency Range: The headphones cover a wide frequency range of 20Hz to 20KHz, delivering rich and detailed sound for an immersive listening experience.5. Type C Charging Interface: The headphones come with a Type C charging interface for convenient and fast charging. Say goodbye to tangled cables!Specification:Item Type: Bluetooth Sleep EarbudsMaterial: ABSBluetooth Version: V5.3Support: A2DP, AVRCP, HFP, HSPTransmission Distance: 10mFrequency Range: 20Hz to 20KHzSensitivity: 115dB/mWCharging Interface: Type CEarbud Battery Type: 2 x 30mAh Lithium Ion Batteries (built In)Charging Case Battery Type: 300mAh Lithium Ion Battery (built In).Package List:2 x Earbuds1 x Charging Case1 x Charging Cable1 x Instruction Manual