Tweaknews posted a review on the Microsoft Explorer Wireless Rechargeable Mouse
After using Microsoft's new Explorer mouse for over a week, I'm very impressed by both the functionality of the BlueTrack Technology and the overall design and feel of the mouse. Careful shopping can get you one of these units for around $40 or so, and while cheaper mice are available, I would consider this an excellent value and would have no reservations in recommending this product.Microsoft Explorer Wireless Rechargeable Mouse Review