(What does custom mean? It means I chose the best parts for the mouse and it's lightweight) Custom Mouse Viper mini PMM Mouse Company, if you search you'll find their mice, the cheapest is 1000 Internal Parts: Razer Viper V2 Pro Neo 8k 35 g Coating: Ultragrip Skates: G305 Tiger ICE V2 Razer Hyper polling 8k Battery: 300mAh It comes with a bag containing its tools and screws. I ordered the mouse from America and waited two months for it to arrive. Usage duration: only one week. I bought the mouse for 1330. Reason for selling: The size didn't fit my hand. I ship to any city in the Kingdom.