Battery life, after installing the handle, you can install an extra battery to increase the power when .Increase the balance, the camera will lose balance after installing a lens, and the handle acts as a stabilizer.Vertical , vertical is more convenient when portraits.Protect the camera and prevent the camera from being bumped.With a dust/splash-resistant rugged design it allows for a more comfortable grip even when from vertical angles.Model: MB-N11 handleApplicable models: suitable for Z6II, Z7II camerasPower supply system: use one or two EN-EL15C/EN-EL15B/EL15A/EL15 lithium batteriesWorking temperature range: 0-40CProduct size: about 139 x 77 x 118mmMaterial: ABSColour: BlackPackage Contents:1 x Camera HandleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.