1. Brand: OEM
2. Connection mode: BT
3. Output:4 Ω 3.5-inch 20W full frequency external magnet * 2, 8 Ω 10w2 inch treble external magnet * 2
4. Battery capacity: 4500MAH, 3.7V
5. Frequency range:87.5-108MHz
6. Built-in 18650 4500mah battery;7.4V
7. SNR: ≥ 80dB
8. Input power:DC 5V 2A