environmental testing. This means putting Pebble through its paces and seeing how the hardware holds up in a variety of everyday (and not so everyday) conditions. Here are just a few of the tests that Pebble is undergoing: We can confirm that the issue we were having with the antenna ( Update 18 ) has been conquered! The latest samples have vastly improved range and meet all of our requirements. Originally, our design included a chip antenna (similar to this ), a simple antenna that's easy to use. But after testing back in August showed degradation of the signal inside a test Pebble, we redesigned the radio-frequency (RF) path. We switched to a custom-built antenna solution that uses metal traces positioned to be higher above the bottom of the watch, allowing the RF signal to be clear of water-filled cylinder that is a human wrist. 2-3 test builds remaining before mass production Before we get into mass production (ie manufacturing all 85,000 Pebbles), we have several more test builds to complete. A test build is when we get the whole assembly line into place and manufacture/assemble a batch (normally around 50-300) of Pebbles. These test builds give us the chance to test the end-to-end manufacturing process, catching problems, testing new solutions and eliminating bugs. These are our major opportunities to revise and fix any problems with the design or manufacturing process, so we're being extremely diligent and careful. Testing different variations of batteries, vibrating motors and backlight modules For example,