What size battery- I tried the 1620 it is to big?

I have used the CR2032 lithium 3V battery.

How do you keep the Tempo Trainer near your ear when running? Do they attach to sunglasses or sweatvac visors?

it has a clip to attach to a hat/visor, not glasses.

I ordered mine a few weeks ago. Battery it came with never worked. I bought a new CR 1620 and tried 1632 and still does not work. What can I do?

I never had and still haven't had any problems with my Tempo Trainer.If yours isn't working,I would send it back and get a new one.My works fine.

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Specifications

Color	Yellow/Blk
Brand	FINIS
Material	Plastic
Product Dimensions	4.02"D x 7.01"W x 0.98"H
Item Weight	0.07 Kilograms
Number of settings	3
UPC	616323201903 746264075582 097727443708
Global Trade Identification Number	00616323201903
Manufacturer	FINIS
Item Package Dimensions L x W x H	6.34 x 4.65 x 1.38 inches
Package Weight	0.07 Kilograms
Item Dimensions LxWxH	7.01 x 4.02 x 0.98 inches
Brand Name	FINIS
Country of Origin	China
Model Name	Tempo Trainer Pro
Suggested Users	unisex-adult
Number of Items	1
Part Number	1.05.120
Model Year	2015
Included Components	Tempo Trainer Pro
Size	Small
Sport Type	Golf

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