Product description Material: plastic Size: 120 * 30 * 60MM Color: painted black Battery capacity: 300mAh Signal-to-noise ratio: 75dB Frequency range: 60Hz-16KHz Package content: 1 * Mini card bluetooth speaker ring 1. Amazing Sound Delivers stunning stereo sound with exceptional clarity and no distortion from the double precision stereo drivers and proprietary bass radiator. 360 all-round sound effects offer stereo sound. The bass port alone amplifies the low-end frequencies to hit the beats even harder. 2. Advanced Bluetooth 5.0 Our advanced antenna design with Bluetooth 5.0 provides fast connection and extended radio range. The integrated microphone function ensures clear sound quality. By connecting to devices in a matter of seconds, perfect sound quality can be guaranteed in a barrier-free environment without delaying playback. 3. Worry-free battery life Charge the included cable in 2 hours. When the battery is fully charged, charging will stop automatically. The built-in highly efficient 300 mAh lithium-ion battery can be used for up to 6-8 hours. Wireless portable bluetooth speakers should be a must have in your life. 4. Compatible with multiple playback modes. Microcard (TF) playback, MP3, WAV format support, and memory playback support. 5. Convenient to carry Mini music box, put the music in your pocket, mini portable bluetooth speaker only 120 * 60 * 30mm, little man with big energy, enjoy music anytime anywhere.