ò Anti-septic, water-proof & long life ò Web-Layout version with 38mm stainless steel trackball ò Attractive key-design ò Best visible printings ò Dust- and waterproof protected (IP65/IP68 on request) ò Abrasion-resistant laser-lettering ò Non removable keycaps ò High operating comfort and good tactile feedback. Neutral Packing.