1. Main material: wood2. Weight: about 80g3. Dimensions: 9.5×10.5 cm4. Production process: laser engraving5. The mechanical transmission perpetual calendar is composed of many precision parts, and through the combination of multiple sets of gears, a beautiful perpetual calendar created by mechanical transmission is created6. There are planet wheels and rotating gears inside to find the correspondence between the date and the week, which is fun and practical7. Can query any day in 2017-2044 Specification: Package Weight One Package Weight 0.11kgs / 0.25lb One Package Size 20cm * 11cm * 2cm / 7.87inch * 4.33inch * 0.79inch Qty per Carton 288…