... 2000 3.Lightweight:30g mic 4.laser,page up/down USB Wireless Microphone,Bluetooth Wireless Microphone Feature:1.Portable,convinient,microphone hands free ... to use.5. LCD display power supply,low battery,signal link,volume and so on.6. Remote electronic laser pointer,page ... 5Gaussian Transmitting Power: 2.5mW Linking Mode: ID Coding, Auto-link locking Data Transmitting: Two-way 2.4G frequency-hopping (FH ...