With the BobDock, B-O-B-3 can be programmed wirelessly with an iPad or iPhone. Bluetooth low-energy technology is used to transmit the programs. A stable connection is ensured thanks to the use of a high-quality Bluetooth module. This is particularly important in schools that have many end devices. When not in use, the BobDock switches off automatically and can achieve very long operating times thanks to the ultra-low-power standby mode and the highly efficient step-up power converter with a single AA battery. For operation, an AA battery, 1.2 V or 1.5 V battery as well as BOB3 or BOB3 SMD are required https://elecena.pl/product/17986174/bobdock-bluetooth-expansion-for-b-o-b-3 2021-04-28 https://elecena.pl/product/17986174/bobdock-bluetooth-expansion-for-b-o-b-3 2022-10-27