1.hand free,USB jack
2.ISO,CE,ISO9001,bluetooth
3.sensitivity:86db,compatibility
4.2.4ghz,mic built in
5.wireless microphone

Wireless Microphone for Teachers,USB Wireless Microphone,Bluetooth Wireless Microphone

For handsfree convenience, the 1090 with pendant type microphone If both hands free is

 what you need, this microphone is perfect. 2.4GHz emitter, microphone and processor are

 combined in this all-in-one unit, for revolutionary, cable-free convenience.

 Feature:
1.Portable,convinient,microphone hands free,USB jack
2.Certificate:ISO 9001:2000,Rohs,CE
3.Lightweight:30g only in total
4.frequency worked:2402-2480MHz

5.Unique function:laser pen as a teacher pointer,page up/down.

6.USB: charging,ungrade

Function:

1.Multichannels:It has more than 1000 channels.

2.Compatibility:The same transmitter can be used on different receiver.

3.MIC type:Built-in MIC design,eliminating the line.

4.Size:Staff of a small size, easy to use.

5. LCD display power supply,low battery,signal link,volume and so on.

6. Remote electronic laser pointer,page turner, USB upgrading.

7. Pen designed,instead of any other MIC.

8.Lithium Battery Environmental protection.

9. It can work for 30 hours,standby time :60 days.

More specifications: