These two blocks let you establish a stand-alone connection between two chains of blocks so that they can communicate wirelessly. Maximum range: 10m.Features The magnetic design at the back of Neuron blocks makes you can simply place your gadget on the magnetic surface such as whiteboard The redesigned magnetic Pogo Pin-connectors effectively prevent blocks from being connected incorrectly Pairs with other blocks through a physical connection Support two ways to update firmware: wired and wireless The sides of each block are covered by a silicone sleeve to make sure that there are no sharp corners exposed Winner of 4 international design awards Specification Bluetooth Specification: BT4.0 Frequency Band: 2402-2480MHz Antenna Gain: 1.5dBi Communication Distance: 10m Output Power Class: ≤4dBm FCC ID: 2AH9Q-NU001WT Anti-drop Ability: 1.5m Operating Temperature:-10?~55? Operating Humidity: ?95% Weight: 22.40g