BERNY Mechanical Automatic Diving Watch 20ATM Water Sapphire Comfortable Silicone Luminous Manual Winding Function Men's Resistant, Crystal, Band,

Automatic and Manual Winding Function: This men's watch features a high-precision Miyota 8215 automatic movement, providing a long power reserve of over 41 hours. Since it supports both automatic and manual winding, manual winding is recommended if the watch will not be worn for more than 42 hours. Highly reliable quality: Ergonomically designed for a perfect fit on the wrist. The 316L stainless steel case features a durable PVD coating and scratch-resistant sapphire crystal. The sophisticated blue, green, and black dials, along with the matching waterproof silicone strap, are stylish and durable. Bidirectional Rotating Inner Bezel: The bidirectional rotating inner bezel, operated by the crown at the 2 o'clock position, allows for simple and precise timekeeping. The transparent markings and numbers are easy to read, and it also functions as a diver's watch, particularly useful for timekeeping during diving. The orange luminous markers for the first 15 minutes and the subsequent blue markers for the 45 minutes enhance visibility and safety underwater. A trusted brand: BERNY has absolute confidence in the quality of its products. Customer satisfaction is our top priority, and we provide prompt and dedicated customer service to address any inquiries. Important Information: For automatic watches, you must fully wind them before first use. To fully wind a watch, rotate the crown clockwise approximately 30-40 times, or wear it on your wrist for at least 8 hours. If the watch is not fully wound, it will lose time. Follow the steps above to check the accuracy of the timing. If your automatic mechanical watch is displaying between 9 PM and 4 AM, do not adjust the date/date. This will cause errors due to changes in the mechanism, and the calendar will need to be readjusted.