Attention : In fact , this watch dial is black , just window glass with function of blue , so on some position, you will see it is blue .if anybody care about that , please don't buy it Key points : 1. Function : 3 time zone , alarm , stopwatches , chronograph , LED light ,date ,week , month 2. Type: Men sport Watches 3. Movement: analog digital dual display 4. Strap Material: leather 5. 30M Water Resistant ; suitable for all kinds of daily use like washing hands, splashes.(not allowed to swim) 6. Showing precise time 7. Case diameter: 5.2*5.5 cm Dial size: 4*4cm Case thickness:1.3cm Case material: Alloy Band length:23cm (includes case) Watch weight:123 g Band material: Leather.