How do you know its charging?

The Fitbit device lights showing battery usage light up when you put it in the charger. Then you can check the battery info in the Fitbit app to see the percent charged. This works like your phone charger. Nothing on the charging cable tells you.. but your phone shows the percentage of the battery that is left. When charging.. that percent goes up.

No, this does not come with a wall plug unless your outlet takes a USB port. You can plug this into any standard USB port, there should be one on your laptop, or if you have one in your car.. you can plug into that USB port, or there are many usb to wall outlet converters. Check if your phone has one.. or purchase one.

AC Adapter Current	1 Amps
ASIN	B07Q6TVXX4
Best Sellers Rank	#3,475 in USB Cables
Brand	EXMRAT
Cable Type	USB
Color	Black
Compatible Devices	Charging Adapter
Compatible Phone Models	Fitbit flex2
Connector Gender	Male-to-Male
Connector Type	USB Type A
Date First Available	March 31, 2019
Indoor/Outdoor Usage	Indoor, Outdoor
Is Discontinued By Manufacturer	No
Item Weight	0.634 ounces
Item model number	bvcwq66
Manufacturer	EXMRAT
Maximum Voltage	5 Volts
Model Name	Fitbit Flex 2
Number of Items	2
Number of Pins	3
Package Dimensions	4.65 x 4.3 x 0.6 inches
Recommended Uses For Product	Charging
Shape	Round
Special Feature	Lightweight
Specification Met	RoHS
UPC	607841537469
Unit Count	2 Count

Compatible with Fitbit Flex 2 Charger Cable (2Pack, 30cm/1ft), USB Charger Charging Cable for Fitbit Flex 2 (Black, 2Pack)

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