Specification:

Max. OSPL90 (dBSPL) : 128 (±4 dB) 
Max. Full-on Gain (dB) :40 (±5 dB) 
Frequency Range (Hz) :180-4200 (±6 dB) 
Total Harmonic Distortion (THD): 800Hz 6% (≤10%) 
Equivalent Input Noise (dBSPL) : ≤26 
Battery Current (mA) : 1.6 (±0.3mA) 
Working Voltage (V) : 1.2 
Charging Time (H) : 4-8 
Working Time (H) : 15-18 

 
Payment Methods&colon;<o&colon;p>
 
We accept TT bank wire transfer&comma; Western Union&comma; Paypal and escrow payment offered by Alipay Escrow and Escrow&period;com&period; 
For latter three payment methods&comma; extra charges shall be applied&period;<o&colon;p>
 
Shipping Methods&colon;<o&colon;p>
To be shipped by express mail&comma; by air or by sea based on customer's request and weight&sol;volume of goods&period;<o&colon;p>
 
Warranty&colon;
We provide a limited quality warranty of 12 months for the items sold dating from their delivery date&period;

Meter8 is your best choise &excl;