MONITOR ARM AND LAPTOP TRAY: This black dual-purpose mount allows you to mount a laptop using the ventilated VESA laptop tray and up to a 32" display with basic articulation & height adjustment...

DESKTOP WALL MOUNT: Constructed of thick powder-coated steel, this heavy-duty wall mount for PC supports chassis weighing up to 40lbs (18kg); Protective rubber spacers prevent damaging the CPU...

This Rayovac CR2 Lithium battery is 3 volt. They are sold in packs of 2. They are typically used in camera equipment, flashlights, fire alarms, wireless motion detectors and carbon monoxide detectors...