TruPower TP300P 650VA/390W UPS, Universal
$32
-Class: 2 laser
-Wave Length: 640~660nm (red light)
-Battery type: 2 AAA batteries
-Battery life (Laser pointer): 20-hour maximum
-Battery life (Presenter): 1050-hour maximum
-Wireless technology: 2.4 GHz wireless technology
-Operating distance: Approx 32.81 ft (10m)
$32
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