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aquarium pumps
Accessories included: 5W solar panel
The integrated solar panel charges the internal rechargeable battery during the day using sunlight
Water resistance: No information (moisture protection recommended)
stairs and corners as soon as it detects movement within a 360° range
POWERplus 3-in-1 Spring Powered STEM Kit energysaving aquarium pumps3 in 1 Buildable Models The POWERplus Junior Spiral Spring set allows you to build three different working models from one kit: a wind up racer, a walking robot, and a helicopter with rotating propeller. Each model demonstrates motion in a unique way. Spring Powered Mechanism All models are powered by a hand wound spiral spring. By turning the winding mechanism, energy is stored in the spring. When released, this energy is gradually transferred to