Compact: Compact and versatility in 1 user friendly kitchen device.;Energy efficient: Robotwist uses very little energy (uses 2 pcs AA Batteries).;Robotwist adjusts to fit any jar sizes and guarantees a firm grip around lids.;Easy to use: Position it on the lid, press the easy-switch button, and watch it rotate and uncap. Its so easy even kids can use it.;Size: 7.2 inches Long; weighs 0.80 lbs.