1)Power Supplier: DC5V
2)Output Power: 2W
3)Frequency: 200Hz——18KHz
4)Signal&noise Ratio: ≥60dB
5)Impedance: 4 OHM(Ω)
6)Output: 3.7V~4.2V+0.05V
7)Input: 5V
8)Speaker Unit: 40mm
9)Case Material: ABS
10)Dimensions: H50mm*D52mm
11)Weight: 58.5g
12)Colors: White, Yellow, Blue & Green
13)Lithium Battery Capacity: 400mAh