This is the updated version with lower weight, improved sensor and better battery life.
Decent discount on this one. RRP of $169 (JB Hifi/Logitech online) and average price on staticice ~$150, with $117 at Umart as the next best in-stock option.
"Specially designed to keep you in control even during intense, in-game situations, the Logitech G703 Lightspeed Wireless Gaming Mouse with HERO Sensor is a suitable choice for completing your gaming setup. It’s also compatible with the POWERPLAY Wireless Charging System (sold separately) for convenient recharging."