Model Number: HX-866-#0969 Key Specifications/Special Features: Feature:Transparent acoustic tube style surveillance earphones received superior sound even in noisy environment and it’s also discreet and portableChangeable acoustic tube assembly for hygiene and multiple usersClip can secure to user’s lapel to meet their needAll units feature heavy grade industrial jacketed cables and excellent strain relief for maximum life in the fieldInternal microphone element with excellent voice pick-up360° revolving back clip can turned by different segments to secure to the user's lapel or collar

Can be easy-to-concealed under sport coat and jacket or other clothing

Speaker:

• OD:Φ16mm
• Resistance: 90Ohm±15%
• Sound pressure level: 90dB±3dB
• Rated power: 100mW
• Max power: 20mW

Microphone:

• Size: 9.7*5.0mm
• Sensitivity: -36dB±2dB
• Resistance: 2.2KOhm