Bone Conduction Under Pillow Speaker Music Box Wireless Bluetooth

Description: Bone conduction: This under pillow speaker can transfer the audio via the bone, so it won't easily disturb others while working. Long work time: Built-in large capacity polymer battery, this wireless loudspeaker can provide 20 hours of music playing time and has 300 hours of standby time. Easy to connect: Support bluetooth-compatible 5.0, this under pillow subwoofer is easy to connect with most types of phone and tablets. Auto power off: This bone conduction wireless speaker will turn off automatically after 30 minutes, so you don't need to turn it off manually while sleeping. Other function: This under pillow sound box supports a memory card, which allows you to play MP3 music directly from the memory card. Specification: Bluetooth-compatible version: 5.0. Connection range: Approx. 10m/32.81ft. Material: Plastic. Working voltage: 3.7-4.2V. Vocalism unit: Bone conduction. Frequency response range: 40Hz-20KHz. S/R rate: ?75dB. Battery: Polymer battery, 400mAh(Built-in). Music play time: About 20 hours. Standby time: About 300 hours. Charging voltage: 5V, 400mA. Charging time: About 2 hours. Size(LxWxH): Approx. 15.5x3.6x1.2cm/6.10x1.41x0.47 inch. Channel: 2. Audio crossover: Full-range. Input power: 25W. Rated power: 4W. Impedance: 2?. Sensitivity: 32dB. Total Harmonic Distortion: 1%. Note: There might be a bit of color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Speaker(with 1 Piece Charging Cable, 1 Piece User Manual).

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