This is a kit encompassing a complete 6 Digit clock. This is a DIY kit and as such will arrive unsoldered. The kit makes perfect practice for hand soldering with large solder pads and an easy to read circuit board.The board has mounting holes to allow it to be attached to any surface you can find. With some interesting use of fabric we are pretty sure this would make a good wrist watch.Length:90mmWidth:70mmHeight:3mmWeight:44gSolder Level:Through-holeMinimum Operating Temperature:-40CMaximum Operating Temperature:85CMounting Hole Size:M2.5Mounting Dimensions:85/65mmType:7-SegmentShape:ClockChipset MPN:AT89C2051Battery Required:CR2032colour:Main color greenMaterial:ABS+ metalPackage Contents:1 * DIY clock KitOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.