Sapphire glass. 100m water resistance. Manufacturer: Watch Gecko, Swiss Made Model: Geckota K01 Color: Black Size: 40mm/12mm WatchGecko is a brand started by British watch enthusiasts. The strap is the original and is a bit worn, so you may want to replace it. The buckle has been replaced. There is an etching of a Spitfire fighter on the back. It is an automatic watch and is working without any problems. No box, warranty, or accessories. NCNR (No Claims, No Returns) please.