Material High NT (Nanotechnology) ceramic Item number : 88101 # For Male : weight:108.5 g (three needle) the date was displayed width of dial 31MM thick : 9MM length : 27MM perimeter : 90MM watchband perimeter is about 172MM characteristics: 1. sapphire mirror table, clear, high hardness, resistant to abrasion, it is not easy to scratch. 2. High NT (Nanotechnology) ceramic case, it is the most popular material, no allergic for man's skin, super light in your hand and comfortable. 3. black surface, generous and elegant. easy to mach with your dress. Pursue simplicity, fashion. 4. double clicking's butterfly clasp , watchband is not easy to be loosen,give you a feeling of beauty, comfort and safe. 5. exquisite workmanship make you satisfactory and trust. Tips : this style also have lovers tables, Use of anti-allergy material and provide accurated time, fashion and simplicity.