Wooden 20 Minute Timer Puzzle Kit For Adults 3D Mechanical Model Building Set For Brain Teasers Self Propelled Countdown No Batteries Needed Fun Craft Project For Focus And Relaxation

Wooden 20-Min Timer Puzzle Kit: Self-Propelled, Battery-Free
✔️ 3D self-propelled wooden timer, battery-free, 107 parts

Meet a wooden 3D timer puzzle that counts down without batteries. This hands-on kit is ideal for desks, study spaces, and craft corners where focus and relaxation matter. It’s glue-free and includes everything you need for self-assembly. Model size 173 mm x 80 mm x 256 mm (6.8 x 3.15 x 10 in); Package size 370 mm x 170 mm x 30 mm (14.6 x 6.7 x 1.2 in).

✅ Model size 173 mm x 80 mm x 256 mm (6.8 x 3.15 x 10 in)
✅ Package size 370 mm x 170 mm x 30 mm (14.6 x 6.7 x 1.2 in)
✅ 107 components; self-assembly without glue
✅ Eco-friendly: 100% natural plywood, no dyestuff or varnish
✅ No batteries needed; mechanical timer with roller pendulum and back-wall auto-adjustment
✅ Pack: 1 kit

💡 What is a wooden 3D timer puzzle kit and how does the countdown work without batteries?

A handy mechanical timer that counts down using internal gears and a roller pendulum, with no power source needed.

- Mechanical gear train drives the countdown without electricity - Settable 1 to 20 minutes for focused timing - Self-assembly kit with 107 parts; glue-free - Eco-friendly, made from 100% natural plywood with no dyes or varnishes ✝️