The Citizen NJ0100 - 71E is a top - notch automatic men's watch. It features a durable stainless - steel case and bracelet, offering long - lasting quality. The mineral glass provides great scratch resistance. With a 42mm case size, it has a bold and stylish look. It's water - resistant up to 100 metres, perfect for various water activities. The watch has an accuracy of - 20 to + 40 seconds a day, ensuring reliable timekeeping.

Using this Citizen watch is simple. Just wind it up initially to start the automatic movement. As you wear it, the movement will keep running on your daily wrist movements. When it comes to water, it can handle up to 100 metres of water resistance, but avoid high - pressure water like diving into a pool from a height. For maintenance, keep it clean by wiping it with a soft cloth regularly. Avoid exposing it to extreme temperatures or magnetic fields as these can affect its performance.