Output SPL: ≥99dB(0.7W/0.1m) ± 3 dB at AVE 1.0K 1.2K 1.5K2.0K Hz

Resonance Frequency (F0)：700Hz±15% In 1cc Box 500±100Hz In Free Air

Hight threshold Frequency (Fh): 20,000±6,000Hz

 Frequency Range ：F0~Fh

Rated Impedance ：8Ω±15% at 0.5V/2000Hz

Weight：1.1±0.2g

Distortion：Less than 5% at 1KHz input Rated Power

Magnet：Rare earth permanent (NdFeB) magnet ?13.0 x 1.0 tmm

Buzz, Rattle, etc.：Should not be audible at  2.53 V sine Wave between Fo to 20KHz