Tissot T-Classic Collection Swiss Quartz Watch With A Grey Stainless Steel Bracelet Strap, 28mm Case & A White Coloured Dial With A Date Window. These modern yet classic timepieces provide sophistication and a timeless design suitable both formally or casually as an everyday wear. With an array of options, there is a model to suit everyone. Sapphire Glass A sapphire crystal gives a watch the following properties: extremely high resistance to impact and superior screen and hand readability thanks to its transparency. Because it is the strongest material after diamonds, it is used in fine timepieces for its anti-scratch prowess. Sapphire crystals can take many forms and give the watch a variety of looks: flat, domed, concave or ground. Water Resistance All Tissot watch cases undergo several tests, including a water resistance check. Tissot tests the watch's ability to resist impacts and pressure, as well as the penetration of liquids, gas and dust by replicating the real-life conditions in which the watch may find itself. Weight: 74g Lugs: 14 Model: ETA F04.115 Caliber: 8 3/4''' Dial: HMSD Battery: battery type Renata 364 Functions: EOL (battery end-of-life indicator) Strap/Chain reference: T605045500 Buckle: butterfly clasp with push-buttons