PRODUCT OVERVIEWMake healthy a habit with Fitbit Inspire 2.* This easy-to-use fitness tracker packs 24/7 heart rate, Active Zone Minutes, activity and sleep tracking, up to 10 days of battery, and more--paired with step-by-step fitness & nutrition programs, personalized insights, and sleep tools from Premium, you have all you need for a healthier you.KEY FEATURESEarn Active Zone Minutes as you progress toward your weekly 150 minutes of heart-pumping activity and use 20 plus exercise modes to track goals like distance, calories burned, and more. Water resistance depth:50 metersTrack all-day activity: your steps, distance, hourly activity, and calories burned. Syncing range: Up to 30ftUse 24x7 heart rate to track resting heart rate & better measure calorie burn.Operating temperature: 14° to 113°FEnjoy 10 days of battery life for daily progress without constant charging. Varies with use and other factorsTrack your time in light, deep, and REM sleep, then get a Sleep Score to better understand your sleep quality each nightStay inspired from the shower to the pool with this swimproof tracker (water resistant to 50 meters) and motivated by connecting with friends, competing in challenges, earning badges, and celebrating goal milestonesGet call, text, calendar, and smartphone app notifications right on your wrist. Notifications and app alerts are available on-device when your phone is nearbyGet call, text, calendar and smartphone app notifications right on your wrist. Notifications and app alerts are available on-device when your phone is nearby. Stay inspired from the shower to the pool with this swimproof tracker (water resistant to 50 meters) and motivated by connecting with friends, competing in challenges, earning badges and celebrating goal milestones. Track your time in light, deep and REM sleep, then get a Sleep Score to better understand your sleep quality each night. Enjoy 10 days of battery life for daily progress without constant charging. Varies with use and other factors. Use 24/7 heart rate to track resting heart rate & better measure calorie burn. Track all-day activity: your steps, distance, hourly activity and calories burned. Earn Active Zone Minutes as you progress toward your weekly 150 minutes of heart-pumping activity and use 20+ exercise modes to track goals like distance, calories burned and more. Free 1-year Fitbit Premium trial for new Premium users with personalized guidance, insights and motivation to help you reach your goals.Water Resistance Level: Water Resistant. Battery Life: 10 days. Band Color: black. Compatible Devices: Smartphone. Age Range (Description): Adult. Special Feature: Heart Rate Monitor. Screen Size: 2 Inches. Color: black. Style: Modern. Brand: Fitbit. Manufacturer: Fitbit. Date First Available: April 6, 2021. Best Sellers Rank: #254 in Renewed. Customer Reviews: 4.1 out of 5 stars 142 ratings 4.1 out of 5 stars. Batteries: 1 Lithium Polymer batteries required. Item model number: 810038852775-cr. : B08XN66BPG. Item Weight: 2.82 ounces. Product Dimensions: 8 x 6 x 4 inches.