Realtime results with a clear display and rapid response provide immediate readings for battery power and movement state, improving efficiency. Builtin overload protection safeguards the tester during use, helping protect your investment. For professional shops, garages, and training courses, the qd20 offers reliable service in battery testing and movement evaluations, supporting watches to remain in working condition. Advanced measurement technology accurately evaluates battery power and movement performance states, while maintaining portability and ease of use. Designed for professional watchmakers, watch enthusiasts, and electronics technicians, this tool provides precise diagnostics essential for maintaining and repairing timepieces. Use scenarios: In a professional , test battery installations and verify movement health before reassembly. In training courses, demonstrate proper battery testing and movement evaluation techniques. In field service or electronics , perform onsite battery and movement assessments to determine maintenance needs.