For some reason the battery life falls far short of the 920XT. The Forerunner 735XT boasts 24 hours of UltraTrac (the low power GPS mode for walking) with 14 hours of standard GPS with optical HR product works well for running and swimming. helps you run at a more efficient pace. lightweight. accurate and advanced training aid. Forerunner 735xt provides an amazing amount of advanced features. The lightweight design makes it wearable for several hours. Garmin Forerunner is excellent to watch for triathletes. Design. is dustproof and water-resistant. Garmin Forerunner 645. Garmin Forerunner 735XT. The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water. sweat resistance. Garmin Forerunner 645. Garmin Forerunner 55 vs Garmin Forerunner 245: Battery life . Unlike your smartphone, or smartwatches like the Apple Watch 7, with both watches, you can easily go a good few days between charges Sometimes I forget, and the backlight isn't really noticeable when running in daylight, so the battery just drains again unneccecerily without me even realising. The wrist turn would sound like the solution, but doesn't really seem to work very well (for me at least). And even then I dont really want the wrist turn to put the backlight on Design. is dustproof and water-resistant. Garmin Forerunner 45 Plus. Garmin Forerunner 735XT. The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water. sweat resistance. Garmin Forerunner 45 Plus. It is handy for people who like to explore new places. Has vibrating alerts. Garmin Forerunner 245. Garmin Forerunner 735XT. Vibrating alerts have a variety of uses, such as interval training. Has a stopwatch. Garmin Forerunner 245. Garmin Forerunner 735XT. With a stopwatch you can time yourself. Battery Life after Latest Upgrade. I've had my 735 for about 1.5 yrs and I am suddenly experiencing battery life issues. I did a 68 mile ride the other day, and the battery only lasted 4.5 hrs which means it ran out before I finished. Today, I ran for 2:35 and it was down to 23% at the end of the run - and it was fully charged at the start. As for that webpage on getting FR745 battery life to 24hrs for workouts, here’s the link on that (it also includes somewhat impressive details on exactly what constitutes regular battery life). Next, there’s the price. The FR745 is officially priced at $499USD while the FR945 is priced at $599. Officially anyway. Compatible with smart scales. Garmin Forerunner 735XT ( Garmin Connect Mobile) Garmin Forerunner 935 ( Garmin Connect Mobile) It is compatible with smart scales such as the Fitbit Aria and Withings range. These scales transmit information such as weight and BMI to connected services over Wi-Fi. UeFo.