Seiko Prospex Speedtimer Mechanical Chronograph 42.5 MM LE Black Watch SRQ045J1 Tissot Power supply and battery life:

Power supply and battery life: Tough Solar (Solar powered)

Double-lock

GPS signal reception function (Time zone adjustment

a stainless steel panel back

and watch hands accent the neutral black and white color scheme

Seiko Prospex Speedtimer Mechanical Chronograph 42.5 MM LE Black Watch SRQ045J1 Tissot Power supply and battery life:Movement Caliber Number: 8R46 Movement Type: Automatic with manual winding Precision: +25 to 15 seconds per day Power reserve: Approx. 45 hours Jewels: 34 Case Size Thickness: 15. 1mm Diameter: 42. 5mm Lug to lug: 50. 0mm Crystal: Dual curved sapphire crystal Crystal Coating: Anti reflective coating on inner surface LumiBrite: Lumibrite on hands and index(es) Clasp: Three fold clasp with push button release Water Resistance: 10 bar Magnetic