CASIO E EFC-540D-1AV

Case Size (L × W × H): 48.5 × 43.8 × 11.6 mm
Weight: 144 g
Case and Bezel Material: Stainless steel / Aluminum
Band: Stainless steel bracelet with one-touch 3-fold clasp
Water Resistance: 100-meter water resistance
Power Supply and Battery Life: Approx. 3 years on SR920SW

Exterior:

Glass: Mineral glass
Back Plate: Screw lock back
Surface Treatment: Black ion-plated band and case
Watch Features:

Stopwatch: 1-second stopwatch

Measuring capacity: 59'59''
Measuring modes: Elapsed time, split time, 1st–2nd place times
Accuracy: ±20 seconds per month
Other Features:

Regular timekeeping: Analog display with 3 hands (hour, minute, second) and 3 sub-dials (stopwatch minutes, stopwatch seconds, 24-hour format)
Date display