The HS-70W-1DF is a precision Casio digital stopwatch with 1/1000‑second measurement, multi-mode timing (elapsed, lap, split), large memory for multiple records, clear mineral window and a durable resin case and strap.
Case Size: 83 × 64 × 24 mm
Weight: 82–85 g
Case Material: Resin
Band/Strap: Resin strap
Glass: Mineral glass
Display: Digital
Stopwatch: 1/1000‑second; total elapsed, lap, split; 1st–100th place timer; lap counter up to 99
Memory Capacity: 2 sets × 100 records
Calendar: Full auto‑calendar to year 2099
Battery Life: Approx. 5 years on CR2032
Accuracy: ±30 seconds per month (timekeeping); stopwatch accuracy 99.9988%
