Groove design and protection: portable bottle opener with grooved metal wheels that protect the bottle cap, reduce scratches, and guard your hands. Three metal wheels grip the lid to prevent slipping. Easy to open with lever principle: loweffort operation using lever action. Suitable for elderly with weak hands, middleaged users, and children with hand injuries. Broad compatibility and adjustable fit: can be adjusted clockwise or counterclockwise to accommodate lids within 1 to 3 inches from the lid, for water ring labels and beer cans with lids. Good compatibility across common bottle sizes. Simple, intuitive use: no complicated operation. Turn counterclockwise to adjust the appropriate size, turn the clockwise to attach the bottle cap, hold the handle, and turn to the right. Durable, portable design: constructed with sturdy metal wheels for reliable performance and compact portability for home, office, or outdoor use. Use scenarios: At home or in a care setting to assist seniors or people with limited hand strength. In schools or facilities where children with hand injuries need easy bottle access. On outdoor trips, picnics, or camping to quickly open beer cans or bottles without strain.