Eunicell SR626W  377/376 watch batteries_ 1.55V Silver Oxide coin button cells  

A size 377 battery is the equivalent of a SR626W battery, which is also the same is a AG14 / SG626 battery. 

Eunicell SR626W 377/376 Watch Cell Battery Specifications
Voltage: 1.55V
Chemistry: Silver Oxide
Diameter: 6.80mm
Height: 2.60mm
Terminal Type: Watch/Button Cell
Package: 10pcs Card; in tray package

HS Code: 8506400010

Eunicell SR626 Silver Oxide Watch Cell Battery Also Known As: 1176SO, 177, 280-39, 280-72, 376, 377, 377A, 377BP, 43, 565, 606, 619, 626A, AG4, BA, CX626, CX66W, D 377, D377, G4, G4A, G4A177, GP376, GP377, L626, LR626, LR66, MA, R 377/37, RW 329, S32, S626S, SB-AW, SG4, SP376, SP377, SP379, SR 626 SW, SR 66, SR626, SR626SW, SR626SW/W, SR626W, SR66, TR626W, V376, V377

Eunicell SR626SW non-rechargeable button-coin cell batteries are commonly used in watches, micro LED flashlights, remote controls, cameras, calculators, and many other electronic devices.