Seiko Prospex SJE119 1965 Heritage Marinemaster Blue Dial Automatic Casio G-Shock Aviation Twin Sensor GA1100-1A1 The 43 mm case fits

The 43 mm case fits nicely on the hand

Flash Alert Flashes with buzzer that sounds for alarms

Smart Connectivity

Features: See-through & Screw case back

Water-resistance (ATM)

Seiko Prospex SJE119 1965 Heritage Marinemaster Blue Dial Automatic Casio G-Shock Aviation Twin Sensor GA1100-1A1 The 43 mm case fitsCaliber Number: 6L37 Movement Type: Automatic with manual winding Precision: +15 to 10 seconds per day Power Reserve: Approx. 45 hours Jewels: 26 Case Material: Stainless Steel Case Thickness: 12. 3mm Case Diameter: 39. 5mm Lug to Lug: 47. 2mm Crystal: Box shaped sapphire crystal Crystal Coating: Anti reflective coating on inner surface LumiBrite: LumiBrite on hands, index(es) and bezel Clasp: Three fold clasp with secure lock, push button release