The Pulse ring skips biometric sensors. Instead of measuring sleep or stress, it vibrates a few times an hour to prompt brief mindful pauses. Most smart rings compete on sensors: how accurately they measure sleep, how granularly they score recovery, how cleanly the data syncs to an app that turns the body into a daily dashboard. Pulse , made by a Swedish startup, doesn't play that game. It has no biometric sensors. It tracks nothing. It doesn't relay phone notifications. Its only job is to gently vibrate a few times an hour — with the audio frequency of a purring cat — prompting the wearer to pause, breathe and step out of autopilot for about ten seconds. An optional companion app lets users adjust vibration frequency and follow guided practices like box breathing or gratitude prompts, but the ring works on its own for up to 21 days on a charge, with no subscription required for the core features.…