Your device is dead and the battery slot says 'AG7' or '399' or 'SR57'. None of those names look alike, but they're all the same cell. Silver oxide, 1.5V, built for watches, game units, and cameras where you need a flat voltage curve without leakage. Cross-references: 399, AG7, SR927SW, SR57, G11, S926S, RW413, 543, 35. Find your number in that list — it's the one. Drop it in, close the door, done
| 0 | 399 |
| 1 | AG7 |
| 2 | SR927SW |
| 3 | SR57 |
| 4 | G11 |
| 5 | S926S |
| 6 | RW413 |
| 7 | 543 |
| 8 | 35 |
| brand | JAYCAR |
| category | ELECTRONICS & COMPONENTS |
| subcategory | POWER & BATTERIES |
| chemistry | Silver Oxide |
| voltage | 1.5V |
| type | Coin / Button Cell |
| use | Watch, Game, Camera |
| rrp_aud | 5 |