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 large 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. Product model: MB-N10 Applicable models: Z6/Z7 Use battery: EN-EL15 battery * 2 pieces (not included) Working temperature: 0-40 Working humidity: 85% or less Product size: 135.5 x 107.9 x 68.2mm Material: ABS colour: black Package Contents: 1 x Camera Handle 1 x Connection Cable Only 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.