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Doosl Wireless Presenter Up to 1000 Feet Working Range - Green Laser pointer for presentations With the Doosl Wireless Presenter, it's easy to turn your presentation into an audience-grabbing showstopper. Everything you need to control your slideshow with confidence is in the palm of your hand. Advance or go back through your slides at the touch of a control key. Focus their full attention on your most important points with the bright green laser pointer. Features: - Nearly 1000 feet working range - Brilliant green light - Built in 1000mAh Li-battery - LCD screen with timer and silent vibrating alerts - Plug and play technology Top-grade microchip - High quality materials, comfortable touch feeling Specifications: Transmitter Technology: Radio Frequency Frequency: 433MHz Control Distance: 1000ft Class II Max Output: 650ft Wavelength: 532nm Battery: 1000mAh polymer Lithium Working Voltage: 3.6V~4.2V Sleep Current: