Product DetailBasic InfoModel NO.:DY-28Certification:RoHS, CEPower:2.5WEmitting Color:WHITEDistortion: <0.55%Bluetooth frequency: 2.402GHz-2.48GHzBattery type: lithium battery 4000mahLighting model: high/midium/lowMusic format: MP3Lamp Body Material:ABS+PPFunction: bluetooth speaker-alarm-date-time-touch lampPlaying time: 3.5-6 hoursProducts Features:1. Low consumption and low lighting attenuation2. Soft lighting and good for eyes especially in middle night3. Three lighting models