Specially optimized algorithm firmware enhances the hashrate to 940KH/s (up and down), increasing the probability of winning the lottery by 750% (Nerdminer V2 only 55KH/s). Optimized Software that achieves a higher Harshrate of 940KH/s. Standalone: can work as a BTC lottery miner directly over WiFi. No External computer is needed. Embedded: low cost, low maintenance, high availability, high reliability, low power. Versatile: solo/pool mining. Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Color:As Shown Material:PCB+Plastic Package Contents: 2 x Solo Lottery Miner 2 x USB Cable(The color is random, and the designation is not accepted)