Retekess TT107 Wireless Transmission System 2.4G Ear-hook Tour Guide System Telescope Mounting Clamp transmission 465nm to 530nm and

transmission 465nm to 530nm and above 645nm

25" filter thread for standard eyepieces

Imaging Benefits:

These filters offer superior color separation and transmission

Retekess TT107 Wireless Transmission System 2.4G Ear-hook Tour Guide System Telescope Mounting Clamp transmission 465nm to 530nm andRetekess TT107 Wireless Transmission System 2. 4G Ear hook Tour Guide System Retekess TT107 is an earhook design tour guide system Integrated design, wireless headset, built in antenna, slim and compact design, easy to carry and storage,it is small and light. It is very easy to carry. And it has charging box (not included) to fit them. And itself is a speaker mic or earpieceas well, you don't need extra earpiece and speaker mic, and you don't need to