Two modes. Sleep – a slow, low-frequency pulse for winding down. Wake – a brisker pattern for a mid-afternoon slump or the last hour of a long drive [passenger only].
12 intensity levels. From imperceptible to a clear tingle. Most people settle on 3–5 for bedtime.
20-minute auto-off. Long enough to drift, short enough not to matter if you fall asleep holding it.
Skin-contact sensor. Only runs while it's in your hand; drops it out of your palm and it pauses.
Swivel design. Closed, it's a smooth pill. Twist it open and it becomes a heart that sits in your palm with the plates against your skin. Oddly satisfying to fidget with.
30 grams. Lighter than a car key. Comes with a wrist lanyard so it doesn't disappear down the side of the bed.
USB-C, weeks per charge. 180 mAh battery, 90 minutes to charge, roughly 46 hours of use – months of 20-minute sessions.
Display. Shows mode and level so you're not counting button presses in the dark.