Daily deals roundup: Calumet battery booster, webcam, Zune

We start this daily deals roundup with the Calumet deal of the day which is the Calumet Travel-Pak Battery Booster for $40 plus shipping and handling. The product description is laconic, it says "This booster battery doubles the capacity of the Calumet Travel-Pak battery".

Next, a number of memory cards are included in the latest stream of price drops at J&R World.

(SOLD OUT) One of the four eBay deals of the day includes a two-pack of Microsoft LifeCam VX-3000 Webcams for $40 with free shipping and handling. So you get two webcams. This is offered by powerseller "Buy", which is Buy.com. (SOLD OUT)

(SOLD OUT) And another MSFT product, this time a refurbished 4gb Zune media player for $47 with free shipping and handling as the NewEgg deal of the day. Nuevo Huevo sets a limit of ten units per buyer. There are no rebates. Please keep in mind, these are recertified units.(SOLD OUT)