Premium Material: The watch is made of high quality ABS, durable, exquisite, a perfect decoration for your car, motorcycle Miniature Size: This clock is as small as a coin money, does not take up space and is beautiful and practical. Strong adhesive: the stickers of our watches are very resistant, transparent, do not rub off, firmly stuck, easy to remove. Clear Display: Our watch has large fonts which can clearly display hours and minutes. Quantity: 1 piece. Material: plastic Color: black. Battery: 1 built-in AG4 button cell. Dimensions: 2.75 x 1 cm (D x H). Contents: 1 adhesive clock. Notes: 1. Our watch has no seconds indication, no 24-hour system and no luminous function. 2. The white buttons on the side are mainly waterproof, please don't throw or lose them. 3. Since the bottom cover is treated with waterproof adhesive, it may be more difficult to lift. Battery change method: Remove first and slowly lift from lower edge to replace it. Replace the back cover (apply a little 502 glue) and reattach it with a spare adhesive paper. Since the bottom cover is treated with waterproof glue, it is more difficult to lift it. Please pay attention to the risk of damage when replacing the batteries.