Commlite ComPak Battery Grip is designed specifically for D5100D5200D5300. It’s different from other factories’ battery grip those are widely used for D3000/D60/D40. The Commlite ComPak Battery Grip D5100 uses the remote cable to connect the grip and camera with the half press shutter button function support. Commlite ComPak Battery Grip is perfect for Nikon D5100D5200D5300. Features: 1. Utilize powerful production materialstable and good touch feeling; 2. Be able to contain two EN-EL14 Lithium batteries; 3. High-quality matching with the original Nikon Battery Grips; 4. Multifunctional battery tray; 5. With the exposure control function; 6. A vertical shoot shutter and main control wheel; 7. Half press shutter button; Shutter button: Half-press for auto-focus Full-press for shooting; AA battery tray: Be able to contain two EN-EL14 Lithium batteries;