This is an A27 battery, which is often denoted as either 27A 12V, 27A-C1 or MN27.
Use high-quality Duracell batteries in your battery-driven erotic products to get the most out of them.
Always remember to recycle your used batteries.
BATTERY TYPE: A27 - LR1 / N / E90 / 910A / AM5.
BATTERY VOLTAGE: 12 V.