Just bought this gw-3000m-4aer. I set the correct time zone, yet it's 1 or 2 minutes ahead. Tried to let it receive the correct time over night, tried manual receive, didn't work.
Up close with Casio G-Shock GW-3000M-4AER - Watches2U
BUY Casio G-Shock Solar Multi-Band 6 Chronograph Pilot Watch GW-3000M-4A, GW3000M - Buy Watches Online | CASIO AUS Watches
Casio+G-Shock+Gravitymaster+Black+Men%27s+Watch+-+GW-3000M-4AER for sale online | eBay