JUSTNEED TWS Waterproof Bluetooth Small Speaker, Built-in High-definition Microphone, Support hands-free Call (Black)

1. Connection method: Bluetooth connection
2. Interface type: USB
3. Battery capacity: 850 mAh
4. Frequency response range: 75Hz-18.5KHz
5. Output power: 5W
6. Signal to noise ratio: >80dB
7. Dual mode resonance: medium and high frequency dual speakers + independent dual diaphragm
8. The bottom of the speaker is equipped with a powerful rubidium iron boron magnet, which is 64 times the traditional magnet. It is used in modern high-tech fields such as artificial satellites, magnetic levitation, and aviation instruments.
9. Compatible with most devices with Bluetooth on the market, mobile phones/tablets/notebooks, etc., easily connect, allowing you to put aside the shackles of wired and enjoy wireless fun