This device features a replaceable coin cell battery rated for a full year+ of use, so you won’t have to worry about charging it up on a weekly (or even monthly) basis. The Vivofit is far from Garmin’s most advanced activity tracker, but it has some solid features, especially for more casual exercise enthusiasts. In addition to tracking and displaying your steps, distance, and intensity minutes on its backlit display, the wrist-worn Vivofit 4 tracks your sleep and automatically recognizes the type of exercise you’re doing. You can receive reminders to get moving and track your activity progress on the MoveIQ feature, too. Plus, it’s safe for swimming and showering. Garmin isn’t exactly known for its cutting-edge designs, so the style-conscious will be happy to know that the Vivofit 4 is compatible with various bands, including options from Jonathan Adler and Gabrielle and Alexandra. Thanks to an easy-to-replace, button-cell battery, this device gets you about a year of use before you need to pop in a replacement. This device is also a good option if you want an activity tracker that looks more like a standard wristwatch. The Withings Move ECG features a traditional analog-style watch face, and you can choose from white with blue or black with yellow. Fitness and health features include ECG tracking, sleep tracking, a silent alarm that wakes you up with a vibration, standard activity tracking, and swim tracking.  If you’re considering purchasing a Fitbit device, the Zip shouldn’t necessarily be your first choice; its functionality is somewhat limited compared to other options such as the Blaze and the Surge. The Zip tracks only steps, distance, calories burned, and active minutes, but it’s worth considering if you want to track only basic stats and need extended battery life. This tracker features a replaceable coin battery that lasts four to six months, so you won’t have to worry about whether it will last you through the end of the week. Not to be confused with the Fitbit Charge HR featured farther down on this list, this device tracks all the basic activity stats (from steps to calories burned), including sleep. It also features a silent alarm to wake you up with a vibration against your wrist. When your (compatible) smartphone is connected to the Fitbit Charge via Bluetooth, you can view incoming call notifications on the device’s display. This tracker is available in four colors: gray, black, blue, and burgundy. The Samsung Galaxy Fit2 is a nifty little gadget. It looks, feels, and operates much like a Fitbit would, with smartwatch functionality taking a backseat to highly advanced fitness features. Between workouts, there’s plenty of time to charge. It connects seamlessly to other Samsung Galaxy products, so if you’re already rocking Galaxy Buds with your phone, the Fit is the perfect companion device, made better by its advanced notification features. You’ll also get Samsung’s much-lauded wellness monitoring, which boasts everything from adaptable activity monitoring to heart rate, sleep, and even caffeine tracking. Water resistance up to 50 meters means that the Fit2 probably won’t drown if you take it swimming. And the 126 x 294-pixel resolution of its ultra-vibrant AMOLED display is so crisp some would call it overkill. While five days might seem like nothing compared to what you’ll get with other activity trackers on this list, it’s quite decent considering everything you can do with this device. Along with the usual fitness stats, the Charge HR monitors your heart rate and sleep stages. It also provides more insight into your workouts than other trackers (including the Fitbit Charge, which offers many of the same features minus the heart rate tracking) by letting you see just how far you’re pushing yourself at any given point. This tracker also incorporates some “smartwatch lite” features, including call notifications on your wrist. If you’re training for a marathon or working toward specific fitness goals that involve measuring your heart rate, it could be worth the battery life trade-off.