1) Product Name: Micrphone Headset

2) Model No.: HT-706

3) Speaker dia.: φ40 mm

4) Impedance: 32 ohm

5) Sensitivity: 105 DB±3 DB

6) Frequency response: 20 HZ - 22 KHZ

7) Max. power input: 100 Mw

8) Specification of microphone: φ9 * 7 mm - 58 DB±2 DB

9) Length of wire: 2.0 m

10) Jack: Ф3.5 mm stereo

11) Specification: Nice design, can control the volume as your need