Durable, lightweight, and portable diagnostic tool built to withstand daily use, offering reliable performance and long service life for both professional and applications. User friendly interface with a contrast LCD screen, making it easy to operate and read even in low light; suitable for testing a range of small electronic devices. precision watch battery tester designed to accurately assess voltages and remaining charge of watch batteries, helping to improve efficiency and battery management. Ideal for watch professionals, enthusiasts, and electronic device technicians who frequently measure battery condition across different small electronics. Use scenarios In a watch workshop: quickly verify battery voltage and remaining capacity before selecting a replacement, ensuring correct battery type and performance. At home or in a hobby setup: test batteries in watches and other small electronics such as remotes, fitness trackers, and key fobs to identify weak cells before failure. Onsite service or maintenance: evaluate battery condition across multiple small devices to streamline repairs and confirm device readiness.