Garmin Vivoactive 4S Amazon US - Charging temperature range From 0º to 45ºC (from 32º to 113ºF) Wireless frequencies/protocols 2.4 GHz @ 8 dBm nominal ANT‍+ ® wireless communications protocol Bluetooth ® 4.2 technology 13.56 MHz @ -40 dBm nominal, NFC wireless technology Water rating Swim, 5 ATM 1 I believe vivoactive 4 has some problems with battery calibration, my girlfriend v4s needs to be recharged at 100+ to actually last 4 days of charge. If not it lasts 2 or 3 days even if charged at 100%. Do a hard reset. Report on the Garmin forums. Try update and then reset the VA4. Dimensions: 43.4 x 43.4 x 11.7 mm and 43 grams; Hardware. The Garmin Vivoactive 3 is round, but is much smaller and lighter (half the weight) than my Fenix 3 HR, which piqued my interest. The Wireless Charging Receiver - I got one with a 25mm coil. Garmin "Dock" - Maybe get 2 of these, splitting it apart felty super dicey. Instructions. Place the wireless coil on your charging base & test it with a multimeter. Make sure that it supplies 5 volts (definitely no more than 5.1v) and make note of the polarity (red is positive). No, trickle charging is always safer for any li-ion battery than charging by a higher current. And it’s easy to test if the VA3’s battery can draw at 2.4 amps - just check the time it requires to complete the charge compared to 0.5A USB port. If it charges faster, this means this is not good for the battery in the long term. The Garmin Vivoactive 4 is comparatively lighter than the Samsung Galaxy Watch; the latter has an aluminum frame, making the watch itself heavier. Comparing it to the Fenix 5 Plus, Garmin Vivoactive has the same screen size as the former. However, Fenix has a stainless steel exterior, giving it a bulky feature. And, the Vivoactive HR does more in terms of modes (swim, golf, sensor support, etc…). The Fitbit Surge is about 18 months old, so its starting to show its age in this fast paced market. Vivoactive HR vs Garmin FR230/FR235: This is actually easier than you think. While the FR230 & Vivoactive HR are priced nearly the same, the FR230 lacks an The Garmin vivoactive 4 is another GPS smartwatch that supports wireless charging. It has advanced fitness tracking features, music storage, and a large, easy-to-read display. The vivoactive 4 has a battery life of up to 8 days , so you won’t have to charge it very often. Your menstrual cycle is an important part of your health. You can learn more and set up this feature in the Health Stats settings of the Garmin Connect™ app. Menstrual cycle tracking and details. Physical and emotional symptoms. Period and fertility predictions. Health and nutrition information. NOTE: You can use the Garmin Connect app to add eQ4TU8.