Battery for 3X EziVue LED Slider magnifier , 3V Lithium button, CR1220, Comes with five batteries on a card . (one price buys five batteries)
The CR1220 battery is also a replacement for equivalent batteries:
CR1220, DL1220, ECR1220, BR1220, 280-208, DL1220B, BR1220-1W, CR1220-1W, KCR1220, LM1220, 5012LC, SB-T13, L04