Casio designed it's G-Shock watches to be virtually indestructible rugged timepieces that can last a lifetime. G-Shock watches bearing the module 2688 marking on the back also include Casio's Waveceptor technology. Waveceptor watches are capable of synchronizing to the proper time using a signal transmitted from Fort Collins, Colorado. Casio G2300-9V G-Shock Watches Casio Updated: 2007-08-20 Having a 30pg databank, world time, 1/100 sec. stopwatch and 5 multi-function alarms at your fingertips is empoweringand did we mention these watches are solar powered. Measurement data can be transferred for use to a dedicated app. In addition to manual transfers, the app conducts automatic transfers four times a day. Besides recording daily step counts and calorie consumption, the app displays a step count graph showing step counts, calories and exercise intensity (5 levels) for each day, week and month. Casio Manuals/Battery info: Casio G-shock Watches: Casio Marlin Watches: Casio History: List of Casio G-Shock & Baby-G Prices, G-shock Module numbers, Casio GShock Manufactured Year, and List of Casio GShock Price with Details Casio G-231GH-8JF 2184 2003 16500 Casio G-2800EV-8JF 2534 Casio Manuals/Battery info: Casio G-shock Watches: Casio Marlin Watches: Casio History: List of Casio G-Shock & Baby-G Prices, G-shock Module numbers, Casio GShock Manufactured Year, and List of Casio GShock Price with Details Casio G-2300-1JF 2184 2000 16000 GC-2000M-2AJ0 1799 2000 Read and download Casio Watches 2184 User's Manual online. Download free Casio user manuals, owners manuals, instructions, warranties and installation guides, etc. Official Casio G-Shock Watch user instruction Manuals in PDF format. You can also choose search by module number. We will easily help you to get the G-Shock Manual you need. Official Casio Manual for G-Shock DW-6900 Watch / Module number 3230. You can easily download it for free and make all neccessary setting in your watch. Manual