MUSCLE POWER Here's a low-tech solution to the high-tech problem of the cell-phone battery that dies without a car or a wall plug in sight. Motorola's FreeCharge windup charger ($80; available this summer) lets you generate electricity with your upper-body strength. Just crank the handle for 30 sec., and the charger converts that mechanical energy into enough juice to power a cell phone for five minutes. Special adapters that fit other popular phones are sold separately.
TALKING BLUES The Bluetooth wireless data standard is being incorporated into more and more gadgets, from laptops and printers to cell phones and Palm Pilots....
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