The ultrasonically welding between the base and the case prevents separation and avoids dust penetration. Window : Transparent polyamide based (PA-T) technopolymer, moulded over the case and with a perfect seal. Resistant to solvents, oils, greases and other chemical agents (avoid contact with alcohol during cleaning operations). Model: 0412-10I -14-OA Type:4-digit Counters DIY Supplies:Electrical colour:Orange Material:plastic Size:37*47mm Package Contents: 5*Digital position display Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.