Item Type: Bone Conduction Pillow Speaker Material: Silicone Bluetooth Version: Bluetooth 5.3 Wireless Distance: Approx. 10m/32.8ft Speaker Power: 2 x 2W Battery Type: Built in 400mah Lithium Ion Battery Package List 1 x Bone Conduction Pillow Speaker 1 x Instruction Manual 1 x Data Cable 1BONE CONDUCTION: Pillow speaker utilizes bone conduction vibrating microphone with adaptive noise reduction technology. No need to wear it to deliver clear music to the human ear, no need to worry about the sound affecting the family around you. 2COMFORTABLE EXPERIENCE: Bone conduction bluetooth music box can be placed under your pillow and enjoy your music without the pain of wearing other headphones for long periods of time. No burden or damage to your ears. 3HEALTHY SLEEP: Bone conduction music box is designed for soothing sleep. It is very effective for both adults and babies to fall asleep. It can be used for both men and women. Improve your sleep quality and make your sleep healthier. 4BLUETOOTH 5.3 CHIP: Bone conduction pillow speaker uses bluetooth 5.3 chip, effective connection within 10m, low power consumption, zero latency, more stable and clear sound. Easy to operate and convenient USB charging. 5AUTOMATIC CONNECTION: Wireless stereo pillow speaker long press to turn on, wait for bluetooth pairing, after successful connection can play music, later use the product can be automatically connected to the phone.