Knoflíková baterie stříbro-oxidová 1,55V/39mAh. Rozměry: 9.5x2.1mm.
Podobné značení: SR920SW, SR69, SR921, GP371, 920, CX921, AG6, V371, SR920S, D371, RW315, 370, 1188SO, D370/371, SP370, V370, 370, 371, 1171SO, SP371, V371, G64, LR920, LR921