One’s super slim and the other lets you pay with your wrist.
Okay, just 4.
First up, there's the very thin UP2 ($99), a new band with the same sleep-tracking, step-counting features as the former UP24.
Kinda chic, non? The super slim UP2 pairs with the Jawbone mobile app via Bluetooth for mobile updates. Unlike the Fitbit Flex and Charge, the UP2 lacks a display, so the only way to see your progress is through the app.
It ships April 15 in black on Jawbone.com and Amazon. More colors are coming soon.
Bradford Gregory / Jawbone
It's the most lightweight fitness band I've tried on. Here it is compared to Fitbit's Charge HR and Microsoft's Band.
Some notable features: Jawbone claims that the band's battery lasts 7 days. It's splash-proof (showering and washing your hands), but not waterproof (don't swim with it).
Nicole Nguyen / BuzzFeed