The April is a handy companion for your Electric Imp card. This breakout board provides just the bare minimum for Imp life support - a socket, an ID chip, and a 3.3v buck power supply for high power efficiency. Small and cheap, it's easy to integrate into products for demos or even use in low-volume production.Dimensions: 51mm x 32mm x 6mm (without header) or 11mm (with header)Power supply: USB mini-B and pads for 3.4-16v battery/DC input with reverse voltage protection.PLEASE NOTE: The electric imp is not included!