Coin cell. 3 Volt Lithium Battery.
OEM specifications
Fits:- Canon EOS-1000FN QD Canon EOS-1D Mark II N Canon EOS-700QD Canon EOS-750QD Canon EOS-Rebel QD Canon EOS-Rebel S QD Canon Prima 4 Date Canon Prima Shot Date Canon Prima Tele Date Canon Prima Zoom 76 Caption Canon Prima Zoom Mini Caption Canon Sure Shot Date Canon Sure Shot Max Date Canon Sure Shot Mega Zoom 105 CAP Canon Sure Shot Mega Zoom 76 CAP Canon Sure Shot Quartz Date Canon Sure Shot Tele Max Date Canon Sure Shot Z115 Caption Canon Sure Shot Zoom Max Caption Contax Contax D7 DataBack Contax D8 DataBack Contax D9 Contax G1 DataBack Contax G2 DataBack Contax GD1 DataBack Contax GD2 Contax GD2 DataBack Contax RX Contax RX Date Contax T2 DataBack Contax T2 Date Contax TVS DataBack Contax TVS II DataBack Fujifilm / Fuji Fuji Calderea HD Fuji DL-500 Wide Date Fuji Fotonex 100 Fuji Tandem Date IBM IBM PS/2-1 IBM ThinkPad 770 IBM ThinkPad 770 series IBM ThinkPad 770D IBM ThinkPad 770E IBM ThinkPad 770ED IBM ThinkPad 770U IBM ThinkPad 770X IBM ThinkPad 770Z Konica Konica Hexar Auto Date Konica Kanpai Auto Date Konica MR640 Auto Date Konica MT100 Auto Date Konica Off Road Konica Pop Super Auto Date Konica Super Pop Auto Date Konica Z-up 28W Konica Z-up 80RC Auto Date Minolta Minolta AF Tele QD Minolta Alpha 7 Minolta RD 175 Minox 35 GoldKNOPF Nikon Nikon F601 QD Nikon TW Zoom 105QD Olympus Olympus Quartz Infinity Jr. Ricoh Ricoh Databack 2 Ricoh Databack 3 Ricoh Databack 4 Sigma Sigma 28AF Zoom Sigma 35AF Zoom Sigma 50AF Zoom Sigma AF Zoom Super 100 Sigma AF Zoom Super 28 Sigma AF Zoom Super 70 Sigma Super AF Zoom 100 Sigma Super AF Zoom 28 Sigma Super AF Zoom 70 Yashica Yashica ZoomTec 90 Data Back Yashica ZoomTec Mini Data Back