CASIO PART NUMBER: 10601949
O-RING MATERIAL: RUBBER
This Casio Watch Gasket O-Ring Fits ALL GBDH-1000 model numbers.
**TO DETERMINE THE MODEL NUMBER OF YOUR WATCH YOU CAN FIND MODEL NUMBER ON THE BACK OF THE WATCH CASE. CASIO MODEL NUMBERS CAN BE A COMBINATION OF NUMBERS AND LETTERS EX: AE-2000 DBC-30 DW-6900 GA-1000 GW-3500 PRG-110 PAW-240 PRW-3000.**