Baby G BGA290US-4ASpecificationsSize of case : 45.2??41.5??10.1mmWeight: 33gCase / bezel material: ResinResin BandCompatible band size: 125 to 180mmNeobriteShock ResistantMineral Glass100-metre water resistanceApprox. battery life: 3 years on CR1025Accuracy: ??15 seconds per month