Survival Battery for 2626, 2727 & 2726A GMDSS RadiosFeatures:Lithium battery pack for GMDSS Survival RadioProvides GMDSS capability to survival craft radio5 year replacement life (10 year useful life)Operating life: 8 hours continuous GMDSS serviceSpecifications:Size: 2.3" x 1" x 4.3" (6.0 x 2.5 x 11.0 cm)Weight: 5.5oz (150 g)WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.