Multi-frequency radio-controlled solar movement J615.84 with autoscan, display for big date, sleep mode: after 72 hours, power reserve: up to 21 mon ths, luminous hands, stainless steel case Ø 43.3 mm, turning bezel, pusher look, sapphire crystal, leather strap with stainless steel buckle or stainless steel bracelet with folding clasp, water-resistant up to 10 atm.