Free to use; extras unlock with a one-time purchase. Your heart rate live, on a one-bit instrument panel. Telemetry shows the current heart rate and its zone in the round window and draws it as a sweep trace, like a patient monitor: the cursor crosses the graph a column a second, writing the newest reading over the oldest. Under the trace a zone bar shows where you are in your five heart-rate zones, and large gauges show the rest of your day. The heart rate itself changes when the watch's sensor reports a new value, which at rest is every few seconds. - Live heart rate, free: the number and the zone (Z1 to Z5) in the window, updated as the sensor reports. - The sweep graph, free: two minutes of heart rate, one column a second, smoothed (default) or raw. Its top and bottom values sit beside it, and a dot marks the newest reading. - Zone bar, free: the zones from your user profile, the current one filled. - Two large gauges, free: bars for steps, floors, intensity minutes, the Move Bar, calories (against 2,500 kcal), distance today (against 8 km or miles), running this week (against 30), battery, Body Battery, stress or solar intensity. - White on black or black on white, free. Customize it in the Connect IQ app. These are marked with a star in the settings and can be used during a 7-day trial, then stay unlocked for good with a one-time purchase ($3.99) at murmurgram.gumroad.com/l/telemetry: enter the 12-character Watch face ID from the settings at checkout, and type the key you receive by email into Unlock key. - Longer graphs: 10 minutes or 1 hour across the screen. - Four gauges in one row instead of two large ones. - Gauge shapes: a needle dial, a ring or a plain number for each gauge, instead of the bar. Made for the Instinct 2, 2S, 2X, 3 Solar and E (40/45 mm) and the Descent G1, and for round fenix, Enduro, tactix, quatix, Forerunner, MARQ, Descent Mk2 and vivoactive watches with a memory-in-pixel screen. Battery: the graph moves every second, so Telemetry uses more battery than a still face. When the watch limits a watch face's per-second updates, the graph switches to the last two hours of heart rate (marked 2H) and stays there until the face restarts; the numbers still update while you look at the watch. Privacy: everything is read and computed on the watch. Nothing is sent anywhere. If you buy the unlock, Gumroad handles the payment and your email address is used only to send your key and for support. Permissions are used for sensor history (heart rate, Body Battery, stress) and the user profile (heart-rate zones, this week's running); the position permission comes with our shared data code, and Telemetry does not read your position.

First release.