Computer Surround Dual-speaker Subwoofer Bluetooth Speaker, BS-28A1. Standby time: 240 hours 2. Bluetooth transmission distance: 10 meters 3. Output power: 5W x 2 4. Transmission frequency: 2. 5GHz 5. Supported audio formats: MP3 WMA WAV FLAC APE 6. Input modes: USB flash drive, TF card, 3. 5mm AUX 7. Charging: DC5V 1~2A micro USB 8. Speaker: 52. 5mm 4 5W 9. Transmission power used: 1. 49mW 10. Frequency response: 20Hz~20kHz 11. Signal to noise ratio: 80dB 12. Equipped with two 5W stereo speakers + dual sided bass

The magnetic charging interface adopts a multi-point redundant design and adopts gold plating process to ensure long-term stability

Material: plastic frame + resin lens

Made of latex with no leakage

General Model NB-35

night scenes

People who can not swim should not to use them individually

(R) 9mW (32Ohm) max

fingerprint ID

4) Material: Aluminium

5-inch HD screen

Each set includes one sender and one receiver

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