Google just dropped their Fitbit Air blueprints and you guys are going to love this — on June 3rd of last year at 4:17am EST, Google released the full technical specs along with complete 2D CAD drawings for third parties and tinkerers alike to design accessories that actually fit. The tracker retails for $100 (launched back in early May) as a sleek screenless health companion designed specifically to go toe-to-toe with Whoop, connecting through the Google Health app — which is formerly known as Fitbit if you remember it from days past — plus gets access to Gemini-powered Coach for your fitness data and workout suggestions on the phone. What's brilliant here isn't just the measurements but also mating dimensions, tolerances AND mating force specifications included in those blueprints so that when we design bands they actually hold tight; Google even emphasized maintaining consistent skin contact with the tracker because heart rate and SpO2 sensors need it to work properly (trust me I learned this after my early struggles). The company really wants us to treat our personal style as unique — they literally said in their announcement: "We know that your personal style is entirely unique – and in just a few short days, the community has already come up with innovative new ideas" — which means if you're thinking about making armbands or any other creative add-on for your Fitbit Air right now, this blueprint package might be exactly what gets us started. Google also called out their material requirements to watch: restricted substances specs require copper and brass alloys must stay lead-free while natural latex needs zero allergenic proteins so no skin irritations ruining our sessions — super thoughtful stuff given that these devices sit on your body all day long, making this a real win for both hardware quality AND the DIY community as a whole. Source: https://www.engadget.com/2186347/google-fitbit-air-blueprint-measurements-accessories/