If you are left-handed, don't fear as you won't be missing out on being ergonomic! We have black 2.4GHz wireless left-handed vertical mice available for you so that you can still achieve that ideal 'handshake' posture with your forearm. This comes with a USB receiver (wireless) but isn't Bluetooth. It feels snug in the hand and will help reduce those aches and pains! It has a DPI button which controls the speed of your cursor as well.