Various sizes , types and models are available depending on following criterias.

1. Display window : present or absent.

                               slanted or straight.

2. Battery Holding arrangement. : present or absent.

3. Pocket clip : present or absent.

4. Colour : Black or grey or white.

5. Press fit type without any screws.

6. Enclosure with coloured caps.

7.Gasket for IP65 compliance