Citizen Men's Automatic Tsuyosa Stainless Steel Bracelet Watch 40mm Citizen Tsuyosa Automatic Men's Watch, Silver Tone Stainless Steel Citizen Tsuyosa Automatic Dark Blue Dial Silver Steel Strap Watch For Men NJ0151 88L Citizen NJ0151 88L Tsuyosa with Blue Dial and Date Chronospride Citizen Tsuyosa Automatic Blue Dial Watch Stainless Steel Bracelet. The Citizen NJ0151 88L, also known as the "Tsuyosa", is ideal for those looking for a stylish and contemporary watch. Its 40mm stainless steel case and vibrant blue dial offer a sophisticated aesthetic. The Caliber 8210 automatic movement, with a power reserve of 40 hours, ensures reliable precision. The watch is also equipped with an anti reflective sapphire crystal and a transparent case back, allowing you to admire the internal mechanism while ensuring protection against scratches??? Stainless steel 316L is a remarkably durable material that boasts unbeatable strength, color stability, and hypoallergenic properties. Its surface is resistant to corrosion and oxidation, and it does not release any metal components into the skin or flesh. Furthermore, it can withstand exposure to both fresh and salt water, making it the perfect choice for the active, modern man. Movement: automatic movement Automatic watches are powered by mechanical movement. They work on the principle of gradual opening of coiled spring. The energy of natural hand movements is transmitted during watch wearing through the rotor winding system, which automatically tightens the spring. Depending on the structure and length of the springs, these watches can work for varying periods of time, this ranges usually from 24 to 48 hours. Bracelet material: stainless steel Stainless steel 316L (Stainless Steel) is a very durable material that theoretically can not be destroyed. It is hard (non bendable and non crackable), color stable, antiallergic (does not react with body fluids and therefore no metal components are not released into the skin and flesh) and has anticorrosive surface (the surface is resistant to oxidation and corrosion. Moreover, it is also resistant to fresh and salt water). Date the day of the month Displays the current day of the month period from 1 to 31 December. Water resistance: 50M 5ATM Watches marked with water tightness 50M 5ATM are designed for incidental contact with water (car wash, rain), but also for surface swimming without diving. 50M 5ATM indicates the degree of water resistance standardized by ISO 2281. ISO tests include temperature changes, depth, pressure (water and air) for different times under rest and during manipulation with the operative part of the watch. Crystal: sapphire Sapphire glass in the watch was made in a laboratory by melting aluminium oxide (Al2O3) in the presence of hydrogen and oxygen at 2000 ?? C. After crystallisation into the corundum 'pear', it's cut and further processed into the desired shape and size. Sapphire glass is the hardest glass used in watches. It would be second behind diamond on the scale of mineral hardness, so it can only scratched by diamond. Its only disadvantage is its fragility. Closure type: Folding clasp A Folding clasp is the most widespread method of fastening watch straps and wristbands. It's a simple and reliable fastening method. If it accidentally unfastens, it won't unfasten completely, and the watch will remain on your wrist. Mechanism: Analog(Automatic) Feature: Date Dial Color: Blue Dial Shape: Round Dial Size approx: 38mm Glass: Sapphire Crystal Case Color: Silver Case width approx: 40mm Case Material: Stainless Steel Band Color: Silver Band Material: Stainless Steel Water Resistance: 50 Meter Style Dress Case Material Stainless Steel Strap Material Stainless Steel Strap Case Size 40mm Water Resistance 5 Bar Glass Material Sapphire Glass Clasp Type Fold Over Clasp with Push Button Movement Automatic Movement Power Reserve 42 hours