Fitbit Charge 4 FitnessTracker GPS Heart Rate Monitor Small & Large -Black
Size: Small / Large. Color: Black. Small 5.5"–7.1" 140 mm–180 mm. Large 7.1"–8.7" 180 mm–220 mm. NEW, ORIGINAL parts. Transistors, and so on. Especially in Hard To Find Parts. United Kingdom.