We've been exploring different kinds of designs which are more wearable and smaller. Towards this end, we have a new PCB design. It’s not drastically different from the original design, but we’ve made some design optimizations here and there. Some of the major changes are:

• Got rid of the body temperature sensor, since this didn’t seem to add value to this application, although it is a great chip.
• Made the board smaller, optimizing the placement of the ECG electrode buttons.
• Added an RGB LED for providing more information than just on and off.
• We changed the color to white, just because it looked better.