- Adjust the diameter effortlessly with a simple rotation of the thumb screw, accommodating jaw distances from approximately 8mm to 52mm. - Essential for opening the back case of most watch models, making it versatile for various brands and styles. - Ideal for watch maintenance tasks, including battery replacement, ensuring your timepiece remains functional and accurate. - A valuable tool for watchmakers and hobbyists alike, offering precision and reliability during repairs. - Compact and portable design allows you to carry it easily, whether at home or on the go, making it straightforward to use when needed. Use Cases: 1. Perfect for changing batteries in watches, saving you time and money by avoiding professional service charges. 2. Great for performing routine maintenance on your watch collection, ensuring they operate smoothly and look great. 3. An excellent tool for watch customizers, allowing for easy access to the inner mechanisms for modification or enhancement. Experience convenience and reliability in every adjustment with this practical watch back opener, your go-to solution for watch care and maintenance.