This is a kit encompassing a complete 6 Digit clock. This is a DIY kit and as such will arrive unsoldered. The kit makes 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 you can find. With some interesting use of fabric we are pretty sure this would make a good wrist watch. Length:90mm Width:70mm Height:3mm Weight:44g Solder Level:Through-hole Minimum Operating Temperature:-40C Maximum Operating Temperature:85C Mounting Hole Size:M2.5 Mounting Dimensions:85/65mm Type:7-Segment Shape:Clock Chipset MPN:AT89C2051 Battery Required:CR2032 colour:Main color green Material:ABS+ metal Package Contents: 1 * DIY clock Kit Only 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.