Fits wrist 140 mm - 180 mm in circumference
Fits wrist 180 mm - 220 mm in circumference
This sport band is made of a flexible, durable silicone material similar to that used in many sports watches and includes an aluminium buckle.
Fitbit Charge 4 & Charge 3 sport bands are swim-proof, meaning they're water-resistant to 50 metres. After swimming or getting the band wet, we recommend drying off the band because, as with any wearable device, it's best for your skin if the band is clean and dry. We do not recommend wearing it in a hot tub or sauna. See www.fitbit.com/productcare for more details.
If this band gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Give your wrist a rest by taking the band off every now and then. Learn more.