The Jawbone UP24 is "splash-resistant," but not fully waterproof. Setting a lot of vibration alarms, for example, will tax the battery more heavily. You'll never see the battery, but it's a lithium-ion polymer battery whose charge lasts around five to seven days, depending on use. More specifically: iOS devices newer than iPhone 4S, the fifth-generation iPod touch, the third generation iPad, the iPad mini, and any device running Android 4.3 and later. Syncing, however, happens via Bluetooth 4.0 BLE with a smartphone. Instead, it fits into a proprietary USB connector, which you can plug into your computer or a wall outlet (you'll need a USB power adapter, which anyone with a smartphone should have). ![]() The new charging point looks the same but is not compatible with a headphone jack. In the old band, one of the arms ended in a port that fit into a headphone jack, which is how you charged and synced the device. One major difference in the Jawbone UP24 from the original is the charging point. The Jawbone UP24 comes in onyx and persimmon, and it's available in small, medium, and large.Ĭharging. (Opens in a new window) Read Our Fitbit Flex Review Once the Jawbone UP24 is on, the two ends never really sit flat, which isn't problematic, but is a little ugly. You stretch the two ends of the band open to slide it on and off. Similar to the original Jawbone UP, the hypoallergenic TPU rubber wristband isn't a closed circle. But between them, the UP24 is the better product, a pliable and comfortable wristband that provides relevant and comprehensible information about you and your daily activity. I think they're both just a touch expensive, considering other competitors. In terms of price, the Jawbone UP24 is on par with the Nike+ FuelBand SE. The addition of Bluetooth 4.0 (BLE) syncing is a welcome improvement over the original Jawbone UP ($28.49 at Walmart) (Opens in a new window), which only uploads data when plugged into the headphone jack of a supported smartphone. Jawbone UP24 ( at Amazon) (Opens in a new window), an updated version of the original Jawbone UP activity tracker, counts how many steps you take each day, how much exercise you get, and includes some wonderful features for monitoring sleep and waking you at the appropriate time in your sleep cycle. Read our editorial mission (Opens in a new window) & see how we test (Opens in a new window). Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. Or take the Basis Carbon Steel Edition ($199.99 at Basis) (Opens in a new window), which is more expensive at $199, but masquerades as a wristwatch, while adding a heart rate monitor that reads your heart rate through your skin, a feature that continues to wow me. While comfortable and sleek, you have to wear the Jawbone UP24 visibly on your wrist, whereas clip-on devices, such as the Editors' Choice Fitbit One ($319.99 at Amazon) (Opens in a new window) and Withings Pulse ($139.99 at Amazon) (Opens in a new window), both of which can hide discreetly in a pocket or slip onto the front of a bra. ![]() Its sophisticated sleep features are a draw, but it doesn't have a real display showing the time, distance traveled, and so forth. The Jawbone UP24 ($149.99) is no exception. In my quest to find the best activity trackers for fitness, tradeoffs between features, price, comfort, and style abound.
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