Replacement battery fits 7 Golf Buddy compatible models. Specifications: 280mAh, 3.7V, Li-ion. Compatible with: Voice GPS Rangefinder, VS4 GPS Rangefinder, VS4 Voice, Voice Plus, Voice 2, DSC-GB900 and 1 more compatible models. Replaces: Golf Buddy YK372731, Golf Buddy PL482730. Golf Buddy replacement battery designed for GPS/Navigator devices. Provides reliable power for your device.