Innovative telescope gives kids a close-up view of life on land and under water. Start with the 4x telescope for land-based viewing, or attach the water-resistant Sea-Scope ™ to explore streams, ponds, lakes or tide pools. Use the included Aqualite ™ flashlight attachment for dark or murky conditions. Built-in ruler allows young marine biologists to measure specimens on-site. Thermometer strip reads air or water temperature. Requires 2 AA batteries, not included.