You can now 3D print your own Fitbit Air bands

Google recently launched the Fitbit Air, and now the company has decided to spruce things up a little by introducing a new addition for DIY fans. Google released the official Fitbit Air design guidelines featuring the tracker’s exact dimensions, tolerance margins and 2D CAD files, so you can 3D print custom bands and accessories.

The guidelines provide exact mating dimensions, tolerances, and attach and detach force specifications. Fitbit Air is made up of two main components: the “pebble” housing the sensors, batteries and key components, and the “sleeve” which covers the pebble and connects to the bands.

According to Google’s rules, all bands and accessories must allow for appropriate sensor clearance so that the heart rate and SpO2 sensors don’t get blocked. Google also recommends that the tracker is constantly touching the skin and that the bands are made of skin-friendly materials.

Unlike the Whoop 5.0, the Fitbit Air does not require a subscription for core biometric tracking; the company only charges an optional $9.99 per month (or $99.99 annually) for its advanced Google Health Premium AI coaching. The device is also highly efficient, boasting a 7-day battery life and fully charging in just 90 minutes via a new USB-C magnetic puck.