1. Multi-Function Watchmaking Tool Set includes removing or opening the watch case, adjusting or replacing the watch strap, seals, etc. This repair tool will help you solve your watch problem at home instead of going to a repair shop. Save money and time.2. Portable and lightweight The watch repair kit comes with a black nylon zipper case for convenient storage, easy to maintain and do the job anywhere. With high quality, watchmaker tool is very light and portable, very easy to use.3. Use Perfect set for very common tasks like opening the back of a watch, adjusting the bracelet, changing the watch batteries, the seals, adjusting the straps, etc.4. Professional This high quality 148 piece watch tool set is very suitable for professional and general use and for the repair and adjustment needs of your watches. Perfect for watchmakers, collectors, beginners, etc.