Ugears Timer For 20 Min ★Mechanical 3D Puzzle Kit Model Toys Gift Present Birthday Xmas Christmas Kids AdultsModel Size ( Length x Width x Height ) 173 x 80 x 256mm Package Size ( Length x Width x Height ) 37 x 17 x 3cm Package Weight 650g Number of Parts 107 The Timer is one of UGEARs most beautiful models. It is an exquisite and refined mechanical device that can count down to zero starting from 1 to 20 minutes. Just set the Timers rubber band powered counter hand, wind up the alarm, and watch the relaxing and elegant clockwork tick away until the alarm