What are the watch quality inspection processes? I have compiled a complete list of watch quality inspection procedures currently prevalent in the watch market, which consists of 7 major categories, including mechanical watches, electronic watches, quartz watches, radio wave watches, and diving watches. Watch brand merchants typically require watch quality inspections for scenarios such as bidding, market entry, customer demands, market supervision by industrial and commercial inspection authorities, and product listings on major e-commerce platforms. Understanding the watch quality inspection process is significantly beneficial for project progress.

Common Market Watch Quality Inspection Process Standards:

1. Quartz Watches with Hands
   • Standard Test: GB/T 6044-2005
   • Inspection Process: Reliability, average instant or actual daily deviation, working temperature, voltage range, average temperature coefficient, voltage coefficient, moisture resistance, battery replacement cycle, anti-second function, misalignment of hour and minute hands, magnetic resistance, impact resistance, water or airtightness, appearance, accessory external force resistance, gold plating, corrosion resistance, adhesive strength, wear resistance, calendar change reliability, calendar display fault, battery replacement cycle, timing reliability, alarm reliability, cycle timing accuracy.
2. Mechanical Watches
   • Standard Test: QB/T 1249-2007
   • Inspection Process: Reliability, continuous input, time difference, instant daily deviation, temperature coefficient, comprehensive index, 6H amplitude, impact resistance, magnetic resistance, waterproof airtight performance, misalignment of hour and minute hands, appearance, second stop function, external force resistance, energy index, gold plating, corrosion resistance, adhesive strength, wear resistance, calendar change reliability, calendar display fault, low energy calendar change performance.
3. Diving Watches
   • Standard Test: GB/T 18828-2002
   • Inspection Process: Time preset device, visibility, magnetic resistance, external force resistance of accessories, airtightness under pneumatic overpressure (optional test), saltwater resistance, underwater reliability, thermal shock resistance, external force resistance of crown and other setting devices, shock resistance, water pressure and overpressure underwater airtightness.
4. Waterproof Watches
   • Standard Test: QB/T7-1993
   • Inspection Process: Air pressure resistance test, condensation test, 10cm water depth waterproof performance test, mechanical pressure resistance test of operational parts, water temperature change resistance test, water pressure resistance test.
5. Shock-Resistant Watches
   • Standard Test: QB/T8-1993
   • Inspection Process: Measuring the instant daily deviation before and after the impact test, measuring the instant daily deviation and residual effects after the impact.
6. Magnetic Resistant Watches
   • Standard Test: GB/T 26716-2011 idt ISO 7:2002
   • Inspection Process: Instant daily deviation test before the magnetic resistance test, magnetic resistance test, instant daily deviation test after the magnetic resistance test, residual effects.
7. Metal Watches
   • Standard Test: QB/T 2047-2007
   • Inspection Process: Hardness, vertical pull force, horizontal pull force, buckle, shape, symmetry, appearance, strap roughness, surface condition, softness, flexibility, drop resistance, twist fatigue resistance, swing fatigue resistance, buckle fatigue resistance, gold plating, corrosion resistance, adhesive strength, wear resistance of coating layer.

Understanding Watch Quality Inspection Report Identifiers

After completing the watch quality inspection process, a quality inspection report is generated, typically displaying three identifiers: CNAS, CMA, and CAL. Here’s what these symbols represent and their differences:

1. CNAS Symbol: Indicates that the organization is accredited by the China National Accreditation Service for Conformity Assessment.
2. CNAS: China National Accreditation Service for Conformity Assessment. The “CNAS” symbol indicates certification by the China National Quality Inspection Center for testing and equipment functionality. CNAS certification can be applied for by any laboratory with the corresponding testing capabilities, including first-party, second-party, third-party laboratories, companies, and even individual laboratories.
3. CMA: Indicates that the organization has passed the metrological certification by the National Accreditation Administration of China or the quality and technical supervision departments of provinces, autonomous regions, or municipalities directly under the Central Government.

This information covers the watch quality inspection process.For any further inquiries, please feel free to add CLEAN Factory on WhatsApp: +1(659) 253-4343.