Welcome to ETC Educational Technology Connection (HK) Ltd!
Bluetooth, wireless, rechargeable input
This block is powerful. It is the ultimate switch to power up your inventions. You can use for anything from making a tune on a Buzzer, turning it to a smart doorbell or building an instant pizza button.
Each wireless block has a Bluetooth chip and rechargeable battery inside it. Simply recharge your block with a Micro USB Charging Cable. Bluetooth Dongle for laptop and charging cables not included.