With the touch function design, this watch is very simple and easy to operate. This watch has a luminous function, so you can read the time clear at night and it is very convenient to use. Because of the function of life waterproof, this watch can meet your daily life needs and is safe to use. The adjustable design is very convenient for you to adjust the size to fit your wrist. Made of good silicone material, this watch is very wear-resistant and durable. Dial diameter is 4.6cm. This smart watch is suitable for outdoor activities such as running, jogging and so on. Item Name: Watch Material: Silicone Style: Sporty Crowd: Universal Display Type: Digital Display Battery: 1 x Button Battery (Included) Water Resistance: Daily Life Waterproof Features: Luminous, Chronograph, LED, Durable Size Details: Length: 4.6cm/1.81" (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