CP0113S Features Retro radio design Compact design Suitable for various occasions Large font red LED display screen can display the track play time and frequency value Built-in FM radio External 180-degree rotating antenna for a super radio effects Supports MP3 format files in TF card， USB flash drive Convenient and practical to use Supports one-button EQ sound effect A variety of sound modes for your choice Supports USB cable charging You can also manage the files in memory card Supports AUX input Can be used as an external audio for computers， mobile phones， iPad  General Specs Brand Singbox Model SV-923 Output Power 2.0 W FM Yes Sensitivity 500 mV SNR  ≥ 80dB Charging Voltage USB 5 V Battery Capacity 3.7 V/ 1000 mAh Dimensions 110 x 72 x 28 mm