S1 HIFI Stereo Sound Portable Bluetooth Speaker(Cool Black)

1. Material: ABS, electronic components2. Connection method: Bluetooth connection3. Interface type: USB4. Frequency response: 90HZ-20KHZ5. Output power: 5W6. Signal to noise ratio: 90dB7. Built-in battery: 1200mAh lithium battery8. Channel: 29. Playing time: 6-12H10. Bluetooth protocol: 5.011. Effective distance: 10 meters12. Number of speakers: 213. Operation mode: button14. A variety of playback modes, you can choose at will15. Support TWS series connection, two speakers form a stereo surround system to achieve two-channel16. Using metal double diaphragm, the sound is loud and three-dimensional, and the sound effect is good17. Using 50mm HIFI full-frequency loudspeaker18. Weight: about 402 grams