Product Specifications Movement: Multifunctional Quartz Movement. Type:Fashion & Casual Features: Chronograph, 3 atm waterproof, Luminous Hands, Calendar, Hour, Minute, Second Water-resistant depth: 3ATM Watch weight: 63g Band length: about 230mm (available to wear) Bandwidth: about 24mm Case size: about 48mm Case thickness: about 14mm Function Demonstration * Comfortable Practical -- Durable style, pair it with any type of outfit from business to sport. It fits for daily use! * Stylish Gift -- Looks way more expensive than it costs. A value fashion gift for father, boy friend, or other male classmates, male colleague. * Super Luminous -- Super Luminous Hands & Calibration , is convenient to read the time in the dark（Luminous function needs to be activated by light） * Recommended Working -- Quartz for accurate time keeping, it will always tell you accurate time in any occasion. It's clear to read the time and the date. Luminous Function: Luminous parts glow in the dark continually after absorbing enough light. Waterproof Function(3ATM): It can be used when rainy and you are washing hands (without hot or warm water). CAN NOT be used when swimming or any other in-water activities. CAN NOT be closed with hot or warm water. Date Date Read more