Product details Features: Learn, Play, And Discover: Explore small animals and plants to expand kids' minds and learn about the beautiful world with this worm adventure kit. High-quality material: Made of ABS body and acrylic optical lens, with high resolution and high light transmittance. The focal length of the two magnifying glasses can be adjusted to meet the needs of different observation worm. Transparent bottle body design: large-capacity storage of worm, allowing toys to be observed better, attracting children's interest, and encouraging self-exploration. Educational Training: Great educational training for kids, to exercise their hand-eye coordination by observing worm, discover the impressive natural world, and further develop their brains. Great Gift: The best gift for kids, as a birthday gift, Christmas, and Children's Day gift, encourage them to freely explore the colorful world and beautiful nature. Specification: Material: ABS + Acrylic Magnification: 8X Size: about 135*68*72mm/5.3*2.7*2.8in Lens: 37mm Focal length: 62.5mm Light source: 9 light sources, 6 white LEDs and 3 warm LEDs, can be switched freely Power supply: 3*AAA (not included) packing list: 1*Butterfly Magnifier Box (without battery)