Description1.Suitable for Canon EOS 5D Mark II. Replaces BG-E6.2.Buttons: full press/ half press shutter release, AF button, exposure lock, dial wheel and battery grip buttons on/off.3.To enable shooting in the same way as a horizontal grip.4.Use of one or two LP-E6 Li-ion batteries or six AA batteries.5.Working condition:1/2x LP-E6 or 6xAA/LR6 Alkaline battery.6.Epuipped the vertical shutter and main dial button, to ensure that  you Horizontal and vertical operation is the same, this's more convenient7. Superior craftsmanship, Drip-proof and dustproof design, never worry of falling off easily and light to carry8.Ensure a long and quality photography shooting Introduction-The battery grip is equipped with a vertical-grip shutter button, Main Dial, AE lock/FE lock/Index/Reduce button, AF point  selection/Magnify button, AF start button,1/4" Tripod screw mount. to enable shooting in the same way as a horizontal grip. -Use of one or two LP-E6 Li-ion batteries or six AA batteries .-With a storage slot that the camera bettary cover can be stored into  its storage slot. -It can connect ACK-E6 AC battery adapter.-Product Size: approximately 149.1(W)x114.3(H)x76.3(D)mm /  5.9(W)x4.5(H)x3.0(D)in. -Weight: about 315 g / 11.1 oz (not including battery clip, not  including batteries) product details: Power switch: camera's power switch Operating temperature range: 0 - + 40 Operating humidity range: 85% or less