Product information: Product Name: Portable Outdoor Waterproof Bluetooth Speaker Product model: S610 Product color: blue, orange Product size: 19*5.7*8.6cM Product net weight: 300 g Power supply mode: Maicon 5V charging, built-in 4500 mAh battery USB output: 5V/2000mah Music playback format: mp3 Support TF card/U disk capacity: ≤32GB Support file type: MP3/WMA/APE/FLAC/WAV Memory card type: TF card Working current: 50-300mA DC5V Bit rate: 64-320kbps FM frequency range: Signal to noise ratio: 85db (FM: 65db) Harmonic distortion: <0.05% FM: <0.1%) Working temperature: 0-60 Bluetooth transmission distance: <15 meters Features: 1. The actual rated power of dual speakers is 4 ohm 10W*2 stereo 2.IP6 outdoor waterproof 3. Answer the phone hands-free 4. Built-in 4500 mAh battery, continuous playback theoretical time 12H 5.U disk TF card expansion 6. Support charging while listening to the song, it will automatically shut down after 10 minutes of disconnection 7. Noise cancellation function, built-in noise cancellation circuit, make the call sound clearer 8. Output 5V/2A emergency charging