Dimension: 31mm

Norminal impedance:(4-8)±15%ohm at(1000)hz

Sensitivity(S.P.L):87±3db (1W/1M)

Resonantfreq: (420)±20%HZ measure at (1)Voit

Frequency Range: 250HZ-20KHZ

Rated input: 2W

Max input: 3W

Operating Temperature: -20-±60℃