2 Pack Rechargeable Green Laser Pointer Battery Charger Set Adjustable Focus Aerometal Body Power Teaching Presentation Astronomy Stargazing Indoor Outdoor Durable Construction Visible Light

Illuminate your presentations and outdoor navigation with this set of two rechargeable green laser pointers featuring a 532nm wavelength beam visible up to 19.68 feet for clear pointing at projection screens and distant objects. Each pen emits a continuous line beam with 1mW power output and an adjustable focus mechanism allowing you to change the spot size from a precise point to a wider circle measuring less than 0.39 inches at 19.68 feet by rotating the head. Constructed from durable aerometal these lightweight pointers fit comfortably in your hand or pocket for teaching lectures astronomy stargazing and construction site marking. The complete set includes two rechargeable 18650 batteries and smart chargers with indicator lights that blink red during charging and turn green when fully charged after three to four hours. A built-in key switch ensures secure operation while the working voltage range of 3.0 to 3.7 volts provides stable performance in temperatures between 59 and 95 degrees Fahrenheit. Store these devices in conditions between 14 and 104 degrees Fahrenheit when not in use. The preheat time is less than three seconds ensuring immediate readiness for pointing at stars across the sky or highlighting presentation points in conference rooms. Simply install the battery with the negative pole inserted first press the power button while keeping it depressed for continuous operation and use the key to activate the green indicator for secure use.

• 532nm Green Laser Beam: Emits a 532nm wavelength continuous line beam visible up to 19.68 feet with 1mW power output suitable for teaching presentations and astronomy pointing tasks.
• Adjustable Focus Mechanism: Rotate the head to change the focus and spot size from a precise point to a wider circle for various pointing tasks and distance requirements.
• Rechargeable Battery Set: Includes two 18650 rechargeable batteries and smart chargers with red and green indicator lights showing charging status and full charge completion after three to four hours.
• Durable Aerometal Construction: Crafted from durable aerometal material providing a lightweight yet sturdy body that fits comfortably in pockets and handbags for teaching lectures and outdoor stargazing activities.