ขาย ปากกาชี้เลเซอร์ 5mW เลเซอร์ 650nm สีแดงสีเขียวมองเห็นได้ ราคาที่ดีที่สุด

Powerful red purple green laser pen visible beam 5mW laser 650nm 100% brand new and high quality Material: ABS, metal Color: green This high-quality; pen-sized laser pen was created using the latest crystal and optical techniques.It emits a strong, bright laser beam with a range of 500-1000 meters, aims at projection screens, video monitors, demonstrates any desired target on the graphics, and any opaque object up to hundreds of meters Press the button to open it, and if it closes automatically, release the button to close. It will be used to point to any desired target on the projection screen, video monitor, and demo graphics It can also be used to take evidence, lighting, instructions, alignment, sky pointing (astronomy) or just cool Specification: maximum output power: 5mW wavelength: 650nm dark range: over 1000 m power supply: AAA battery x2 (excluding) output mode: constant wave (not Included) Size: 14x155mm/0.55 "x6.1" Number: 1 Because of differences between different displays, pictures may not reflect the actual color of the product.Thank you!