BERNY Mens Watch Mechanical Automatic Diving 20ATM Water Resistant Sapphire Glass Comfortable Silicone Band Ultra High Brightness Luminous Manual

Product Description Why does the watch sometimes stop? Our watches use the Japanese-made movement MIYOTA 8512, with an average daily deviation of ±20 seconds. If the watch stops, it may be due to insufficient power. This product supports both automatic and manual winding. Automatic winding: To ensure adequate energy, please wear the watch for 6 to 8 hours a day. Manual winding: If you feel resistance while winding, the watch has sufficient power stored. A fully wound watch can maintain approximately 36 hours of operation. Response to questions about luminescent effects: This watch uses a super-luminous material. According to experimental data, when exposed to ultraviolet light for 10 minutes, it will continue to glow for 8 to 10 hours (the first 4 hours will have a strong luminescent effect, gradually dimming thereafter). The glow time under sunlight will be shorter than when using UV light. For results, we recommend using UV light. Exposure to sunlight is a second-best option, and indoor lighting is not recommended due to the lack of ultraviolet rays. Brand Introduction: Founded in 1995, BERNY is now a prestigious company in Shenzhen and a national high-tech enterprise. We have a research and development institution focused on intelligent perception in the Internet of Things (IoT) segment, committed to the research, development, design, manufacturing, integration, operation, and maintenance of smart wearable products and IoT systems, addressing user needs in wearable technology, intelligent integration, multi-network integration, and big data management.