Fisrt Post here. Usual price is 50$+ elsewhere,
Copied and pasted from HN site.
Enjoy stylish, compact comfort and reliable wireless freedom at your fingertips. Curve it comfortably for use. Then smoothly glide your finger up or down the scroll pad to navigate through a page and the Microsoft Arc Touch Mouse responds precisely to the speed of your movement.
Power On and Off
Curve to turn on. Flatten to turn off. No button to switch. A green light flashes to show the battery is working, and then turns off to save battery life.
Touch to Scroll
Click. Tap. Flick. Control. Quickly brush up or down with your finger to flick into hyperfast scrolling.
BlueTrack Technology
Take advantage of BlueTrack Technology, which combines the power of optical with the precision of laser for remarkable tracking on virtually any surface^.
Reliable 2.4-GHz Wireless
Enjoy the 2.4-gigahertz (GHz) wireless technology, which delivers a reliable connection with up to a 30-foot range, with virtually no interference.
More Than Six Months of Battery Life
Use your Microsoft ARC mouse for more than six months without having to change batteries. Battery status indicator tells you when battery power is low.
Yep, and you can add $9 Router or Keyboard to reach more than $25 ($27) to get a $5 discount (That's what I did but have to collect in Broadmeadows).