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they will bounce slightly
The integrated solar panel charges the internal rechargeable battery during the day using sunlight
Order the EcoSavers Draft Stop Cover
stairs and corners as soon as it detects movement within a 360° range
POWERplus 3-in-1 Spring Powered STEM Kit energysaving they will bounce slightly3 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