When desk life gets you down, lift yourself up. A great fit for small- & medium-sized hands, the Lift Vertical Ergonomic Mouse is crafted for comfort from first light to late night. Raise your hand into instant comfort, thanks to a soft rubber grip, a cozy thumb rest, & a 57-degree angled design that promotes a more natural posture. Connect up to three devices via Bluetooth or Logi Bolt, & enjoy up to two years of battery life from a single AA battery. Battery life may vary based on user & computing conditions. Connector / Port / Interface: Bluetooth; USB; Left / Right Hand Use: Left; Mouse Technology: Mechanical; Wired / Wireless: Wireless.