Features: 1. This DIY wall clock is with 3D effect; 2. The Wall stickers are easy to assemble; 3. Self-adhesive, water and steam resistant, non toxic and safe for the children; 4. Silent movement ensures you a quiet sleeping or working environment; 5. Suitable for smooth walls of living room, kids bedroom, dining room, kitchen, office, bathroom, coffee shop, hall, etc. Specification: Material: Acrylic, Alloy clock face, EVA foam stickers; Power: 1 AA Carbon Zinc battery (not included) Size: Small (14 inch) --- Hour pointer length: 9.3cm; Minute pointer length: 13.5cm; Center piece size: 7.8cm(diameter) Reference achieving size(diameter): 40-60cm(standard); Medium (17 inch) --- Hour pointer length: 21cm; Minute pointer length: 28.5cm; Center piece size: 7.8cm(diameter) Reference achieving size(diameter): 60-80cm(standard); Large (20 inch) --- Hour pointer length: 31cm; Minute pointer length: 39cm; Center piece size: 7.8cm(diameter) Reference achieving size(diameter): 80-100cm(standard); How to Install? STEP 1: Find all DIY accessories; STEP 2: Fix the template on the wall; STEP 3: Peel off the paper from the back of the shiny acrylic number, then stick the acrylic number on the corresponding EVA number; STEP 4: Peel off the paper on the back of the black EVA number, Then fit them on the corresponding position; STEP 5: Repeat step 2&3 until all the numbers are in their corresponding position; STEP 6: Fix the centerpiece on the wall. There are 2 ways to fix the centerpiece: Non-trace nail or double-sided tape. STEP 7: Insert 1 AA carbon battery and calibrate time with the setting time knob on the movement; STEP 8: Remove the template paper from the wall and hang the cente.