UGEARS Aero Clock 3D Puzzle Wooden Model Kits for Adults to Build Vintage DIY Wall with Pendulum Self Assembly Mechanical Christmas Birthday Gifts

Functional Timepiece: Real working 3d wooden puzzles for adults clock kit powered by gravity - features counterclockwise rotating hour and minute discs with adjustable pendulum for accurate timekeeping Timekeeping Display: Innovative time-telling system uses fixed pointer with rotating numbered discs - wooden wall clock model kits complemented by a hot air balloon "cuckoo" that descends on the hour Authentic Mechanical Engineering: Gravity-driven mechanism with weighted bag powers the 3d puzzles for adults wooden clock kit through an intricate system of gears, escapement wheel, and pendulum Impressive Wall Display 3D Puzzle Clock: Large-scale wooden models to build adults measures 75x47x16.5 cm with pendulum extension reaching 220 cm when mounted - creates a striking conversation piece Perfect Gift For Curious Minds: Wood puzzle clock kits for adults to build is an ideal present for clock enthusiasts, steampunk lovers, and mechanical engineers for birthdays, Christmas or Fathers day