About this deal
If you are replacing a National GR927 battery in a Casio calculator please note that your calculator handbook is likely to say that Mercury watch batteries are no longer manufactured so your only alternative is to use a silver oxide watch battery of the same size. You should
377 | Renata SA 377 | Renata SA
A range of Renata watch batteries including the most popular sizes, Renata 364, Renata 371, Renata 377, Renata 379 and Renata 399. Manufactured in Switzerland by the Swatch group. Recommended for use in Swatch watches.The Watch Battery Cross Reference Table below gives all Watch Battery sizes and their equivalent replacement watch battery reference For further information about watch batteries; their chemistry, numbering, watch battery prefixes and Due to market conditions delivery times are for general guidance only and may be subject to change at short notice this is a lithium battery. The handbook is wrong! The replacement for the National GR927 is the 399 silver oxide battery and not
Renata Watch Batteries
the CR927 3V lithium battery. This mistake in the handbook appears across several different models of Casio solar calculators. These of coin batteries and equivalents come in 2 types: Silver Oxide and Alkaline batteries. Silver oxide coin batteries generally last longer and have a greater energy density, so expect to pay a little more for these types of batteries. SR626SW, SR66, SR626, SB-AW, 280-39, BA, V377, D377, 606, S626E, GP377, AG4, AG-4, 377, L626, SG4, LR626, LR66, SR628SW, E377, E377CA, LR626SW, 377A, SR262SW, 377X, 377S, GP177, SR6265W, 377/376, E377A, SR625SW, 377BA, CR626SW, AG4/377, AG04 Note, that the lithium watch batteries, or button cells, are 3 volts, not 1.5 volts and cannot be substituted for a 1.5 volt silver oxide watch battery or alkaline
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or height). This will give you an idea of which watch battery to choose if you do not have a watch battery cross reference number to match the battery against.