Tteoobl Underwater Diving Camera Housing Case , Size: M 1. The diameter of the effective transparent lens position is 8CM. The transparent position is made of high-definition plexigl PMMA, which does not reflect light and does not affect the photographic effect at all. It is hard once formed, waterproof and safe. 2. Use environment: rafting, snorking, swimming, outdoor fid sports, taking pictures in the rain, trav and rain protection. It has been tested to be waterproof to a depth of 20 meters, but it is safer to operate and use it in the water to a depth of 15 meters. At the same time, do not be scratched by sharp objects when using. 3. Material: high polycarbonate+PMMA+PVC reinforcing material+ABS 4. Specifications: height 17.5CM x width 19CM x thickness 7.8CM.The M lens is 10CM long and the inner space of the lens is 10CM (the light-transmitting mirror surface is 8CM), and the L lens is 14CM long and the inner space of the lens is 10CM (the light-transmitting mirror surface is 8CM) 5. Note: Please test with a paper tow before each use to ensure that there is no problem, and then put the ectronic product into use.Compatible mods:-For Canon 550D18-55 / Canon 550D18-200 / Canon 50D 18-135-For Canon 450 18-55/ Nikon D90 18-105/ Canon 550D18-135-For Nikon 7000 18-105/ Canon 600D18-135/ Nikon D5100 18-55-For Canon 40D 17-85/ Canon 60D18-200/ Canon 500D18-200-For Canon 7D15-85/ Canon 60D17-40/ Nikon D90 18-200-For Canon 7D 18-200/ Nikon D80 18-135/ Canon 5DII24-105-For Canon 600D18-200/ Canon 60D18-135/ Nikon D700 18-200