Fitbit Charge 2 announced, has bigger screen and heart rate monitor - GadgetDetail
Amazon.com: 6 Pack Sport Bands Compatible with Fitbit Charge 2 Bands, Adjustable Replacement Wristbands for Women Men Small Large (6 Pack B, Small) : Electronics
For Fitbit Charge 3 Band & Charge 3 SE & Charge 4 Breathable Air-hole Silicone Sport Replacement Band lightweight Strap FOR Fitbit Fitness Activity Tracker Purple Adjustable FOR Wrist Size 6.3"-8.3" -
Armbånd til Fitbit Charge 2, 10-pack (S) - ulike farger - Elkjøp