Note：This silent digital clock has no alarm function. Features Material: plastic. Size: 6.50X2.50X1.90cm/ 2.55X0.98X0.75inch. Note: Button battery included. ● This digital watch features durable materials, lightweight design, and decent size. ● It adopts a digital visual display, which is convenient for students to read the time. It can be hung on a lanyard or backpack for easy portability. ● Accurate time display, and silent design, do not affect your normal study and rest, bringing you satisfactory experience. ● The unique creative design of this small digital clock has five colors, you can choose the right color to match with different clothes. ● The clock is very suitable for people who can' t read the clock, the elderly, and students who need to be quiet when studying. For some people who travel, rock climb, and hike, the hanging digital display watch will be very suitable. Package Including 1pc keychain pocket watch ( button battery included )