Portable Mini Speaker, Support U Disk & TF Card Reader Overview1) Use the speaker player for the very first time,ensure to fully charge the battery. 2) Can charge the speaker palyer through connecting DC 5V 1000mA adapter to "DC 5V"port 3) Can play MP3 form music from TF reader card,U disk 4) Support external audio source input(can connect with cellphone/mp3/mp4/pc ect.external audio devices by connect with"LINE-IN"port) 5) Output power: RMS 3W THD=10% 6) Frequency: 150-18000Hz 7) S/N: ≥80dB 8) Power input: DC5V/1000mA 9) Size: 51x51x60mm OEM are Welcome! we can print customer's artwork and logoType of Packing: Plastic BoxPackage Includes: USB Cable, 3.5 jack to 3.5 jack Audio Cable 

Portable Mini Speaker, Support U Disk & TF Card Reader