Faster Delivery ServiceThe estimated delivery time is inaccurate. Normally, it will be very more fast; if you need expedited delivery, please leave a message for priority arrangementSize:Watch Dial Diameter: 51mm / 2.0 inches(Case Diameter: 25.4mm = 1inch = 1€ coin size )Watch Case Thickness: 18mm / 0.70 inchesWatch Band Width: 22mm / 0.86 inchesBand Length: 230mm / 9.05 inchesWeight: 72g / 2.53 oz / 0.15 lbWear Wrist Length: 140-220mm / 5.51- 8.66 inchesIf you can it is a good idea to try to measure the child's wrist before purchasing. for a comfortable fit, you should allow an extra 10-20 mm depending on the overall length.[Junior 6-7 yrs old] 6inch (150mm) [Older Child 9-12yrs] 6.5inch (165mm) - 7inch (180mm)[Teen] 7inch (180mm) - 7.5inch (190mm)[Average Adult] 7.5inch - 190mmParameter:Model: Dual Display Watch 8003Movement: Digital Quartz AnalogueStyle: Fashion & CasualCase Shape: Round Kids Digital WatchCase Material: RubberBand Material: ResinClasp Type: BuckleDurable Watch Battery: CR2025Water Resistance Depth: 5BarGender: Men / Boys / Childs / Teenagers / Unisex / WomenFeature: Military Watches Digital /Sport Watch with Alarm Clock / 50M Waterproof Watch for swimming/ Male Clock with Stop Watch / Dual Time Display Wristwatches / Bracelet