Specially optimized algorithm firmware enhances the hashrate to 411KH/s (up and down), increasing the probability of winning the lottery by 700% (Nerdminer V2 only 55KH/s). Optimized Software that achieves a higher Harshrate of 411KH/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 not affect use. Colour:As Shown Material:PCB+Plastic Package Contents: 1 x Solo Lottery Miner 1 x USB Cable(The color is random, and the designation is not accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.