Quantity: One Piece Color: Silver Product Size: 5*5*5*Cm Material: Aluminum Alloy Built-in Polymer Battery (Lithium Battery): 300Mah Output Power: Rms 3W Mono Thd=10% Frequency Response: 150-18000Hz (3Db) Signal to Noise Ratio: 80Db Speaker: 1.77 Inch (45Mm) Antimagnetic, 4 Ohm Power Input: 5-5.5V/ 900Mah Power Adapter (Not Included) Package: Hte Speaker + Charging Cable + Audio Cable Easy to Carry --- This Digital Speaker is Lightweight, Compact, Portable and Easy to Carry. Mini Size Body Fits Your Hand Perfectly. This Music Player is Plug and Play, You Can Insert Tf Card and U Disk. Support Micro Sd/Tf Memory Card with Fat16/Fat32 File System. Fm Radio Frequency Module --- This Product Has A Built-in High-Sensitivity Fm Radio Frequency Module with Excellent Signal. Lasts 2 5 Hours --- This Product Has A Built-in 600Mah Battery Which Can Last for 2-5 Hours (Actual Play Time Depends On The Volume). Ideal for Outdoor and Indoor - This Product is An Ideal Portable Speaker for Outdoors and Indoors: Home, Dorm, Kitchen, Bathroom, Car, Party, Travel, Sports, Etc.