1. Frequency range: 60-108MHz  
2. Receiving sensitivity: 8uv  
3. Product size: 85x46x20mm  
4. Minimum operating voltage: 2V  
5. Maximum output: 3.2MW  
6. Maximum current: 25MA  
7. Stereo separation: 32dB  
8. The distortion degree: <=1%  
9. External earplug 3.5mm/32ohm x 2 
10. Battery: 2 x 1.5V AAA batteries (not included) 
11. Standard accessories: headset, rope, gift box, english manual