Description:Since it has a luminous function, this watch provides you with a clear reading of the time at night and is very convenient to use.Due to the function of life waterproof, this watch can meet your daily needs and safe to use. The adjustable design will make you can adjust the size to fit your wrist easily.It is constructed of silicone material.Dial length is 4cm, width is 3.45cm.This watch is suitable for outdoor activities such as running, jogging and so on.Item Name: WatchMaterial: SiliconeStyle: SportyCrowd: UniversalDisplay Type: Digital DisplayBattery: 1 x Button Battery (Included)Water Resistance: Daily Life WaterproofFeatures: Square, LED, DurableSize Details:Dial Size: 4cm x 3.45cm/1.57" x 1.36" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Watch