1. Material: ABS+Metal
2. Size:41.5*7.4*4.4cm,
3. Output Power: 3W*2
4. Frequancy Response:80-20KHZ
5. Speaker unit:Φ40 4Ω 3W Diaphragm
6. Single-to-noise:≥80Db, Input Power: 5V≥1000MA
7. Receiving Distance:≥10M
8. Battery: 1500mah lithium battery
9. Working time: 260min(Typ-Max),Charging time: 2-3 hours
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