This beautiful build your own perpetual calendar kit is a brilliant gift for someone who loves puzzles the kit is perfect for novice builders and comes with 26 wooden pieces so they can easily build their own calendar! Once finished, they can set the time zone, any date from 2018 through to 2040 using the disk and proudly display it on the mantelpiece great as a father's day prezzie product details perfect for novice builders easy to construct set the date from anywhere from 2018 through to 2040 using the disk weight 0.6 kg materials metal, plastic, wood recommended age 14 assembled size 90 170mm package size 320 235 39mm 26 wood pieces