Item Type: Speaker Material: ABS+Metal Horn Size: Approx. 2x40mm / 0.1x1.6in Speaker Output: 5W Frequency: 280Hz-16kHz SNR: 85dB Distortion: 0.55% Charging Voltage: 5V0.5V Built in Polymer Lithium Battery: 1800mAh (included) 1[5 in 1 Functions]Bluetooth speaker + touch control LED light + alarm clock + MP3 player + hands free call. Use USB and micro memory or storage card input, auxiliary input and flash drive as MP3 player. 2[Multi Color Changing]Warm light can be used for leisure, living room, bedroom reading and kid's night light. The light can also be switched into music light mode, multi color changes auto with the rhythm of the music. 3[Alarm Clock]12/24h alarm clock with calendar, alarm and sleep mode. Snooze function. If you tap top when the alarm rings, it will sound again in 5min. If you don't need the snoozing, just quickly tap top twice. 4[Large Capacity Battery]Built in high quality 1800mAh polymer battery (included), longer charging and discharging life, so you can listen to it at one time. This speaker lets you enjoy music anywhere. 5[Long Transmission Distance]The transmission distance of about 10m / 33ft is different due to environmental factors and different mobile phone Bluetooth devices, and built in noise reduction shows the taste of life.