Feature: 1. ADVANCED CONDUCTIVITY TECHNOLOGY: The bluetooth sleep speaker utilizes the latest conduction technology to vibrate the sound through the pillow to the ear. It can avoid disturbing the family next to you while listening to music. 2. PROFESSIONAL DESIGN: The bluetooth pillow sleep speaker is customized to relieve stress and help deep sleep. Helps adults and babies fall asleep and get rid of insomnia. Produces soft music that helps relieve stress and helps fall asleep faster. 3. LONG LASTING TIME: Bluetooth sleep speaker can work continuously for 15 hours, providing you with a more continuous and comfortable music experience, and the standby time is also up to 150 days. Bluetooth version 5.3 with superior chip ensures stable and clear sound. 4. TIMING FUNCTION: The bluetooth pillow speaker has a timing function, which can be set to turn off automatically after 30 60 90 minutes or other customized time, bringing you a peaceful night sleep and saving power. 5. SUPPORT MUSIC AND LISTENING BOOK DUAL MODE: With regular music mode and innovative listening book mode, the speaker can read electronic books aloud for you in listening book mode, you can enjoy audiobooks to help fall asleep faster. 6. LED DISPLAY, ALUMINUM ALLOY SHELL: Bluetooth pillow speaker with LED display, easy to understand the working status of the speaker and the power situation. Aluminum alloy shell is rugged, with longer service life and better touch feeling. Specification: Item Type: Bluetooth Pillow Speaker Material: Aluminium Alloy Size: Approx. 100x28x13mm / 3.94x1.10x0.51in Bluetooth Version: 5.3 Bluetooth Transmission Distance: Approx. 10m/32.8ft Battery Capacity: 400mah Lithium Battery (Included) Playback Time: 15 Hours Standby Time: 150 Days Charging Interface: Type C . Package List: 1 x Bluetooth Pillow Speaker 1 x Charging Cable 1 x User Manual Note: Manual measurement please allow some error.