... ,Rechargable Li-battery 2,Mp3 player,USB/TF card 3,LED Display 4,Mini size,Easy to take 5.FM Radio,MCU ... Battery*Play time:8-15hrs(Deending on the volume and temperature)*Net weight:485g(Including battery)*Dimension:105*97*41mm*Amplifier ... ,Publication,Outdoor entertainment Mini Size Rechargeable Portable Voice Amplifier with LED display V-5