The ALT1-P is designed for those who demand both accuracy and clarity. The clear Super-LumiNova® C3 hands and dial numbers make it a popular choice with aviation professionals. Like the Bremont ALT1-Z, the case has an integrated internally rotating bezel. Operated by a crown situated at 8H, it effortlessly measures the time of trips. The modified COSC tested Valjoux movement is finished to the highest possible standards. Movement: Modified calibre 13 1/4” BE-53AE automatic chronometer, 27 jewels, Glucydur balance, Anachron balance spring, Nivaflex 1 mainspiring, 28,800bph, 42 hour power reserve. Bremont moulded and skeletised decorated rotor. Functions: Hour/minute/second, date at 4.30H, chronograph small counters with seconds 30 minutes and 12 hours. Case: Hardened stainless steel Bremont Trip-Tick® construction with scratch resistant DLC treated case barrel. Case diameter 43.00mm, lug width 22.00mm, case thickness 16.00mm. Case Back: Stainless steel with integrated crystal, 5 stainless steel crews with polished heads. Bezel: Patented inner bi-directional Roto-Click® bezel. Operated by crown at 8H. Dial: Metal dial with various ground colours. Coated nickel hands with SuperLumiNova® C3 luminous coating. Crystal: Domed anti-reflective, scratch resistant sapphire crystal. Water resistance: Water resistant to 10 ATM, 100 metres. Ratings: C.O.S.C chronometer tested. Bracelet: Embossed leather (various colours), Kevlar and stainless steel with solid deployment buckle and engraved security clasp. Certification: Every watch case and movement is engraved with its Bremont serial number and is accompanied with its C.O.S.C certification.