Save 15% when you buy this set of 12 
 
 - Bi-directional 50-channel digital transmitter: visitors can ask questions and be heard by the whole group when authorized by the guide. 
 
 - Frequency 748-935MHz 
 
 - Works with 2 ordinary AA batteries, which makes operations easier. Possibility of rechargeable batteries with charger (sold separately) 
 
 - Built-in microphone 
 
 - Belt clip 
 
 - Neck strap 
 
 - Headset microphone 
 
 - OLED display 
 
 - Diffusion up to 100m 
 
 Included in the set: 
 - 1x OTG-200 transmitter with headset 
 - 12x OTG-200 receiver with earpiece