Feature:1. Pull the switch to select output to the radio station or direct sound generation.2. Two No. 7 batteries can be installed inside to push the..
Working Principle:This is a mini ultrasonic levitation device that can suspend foam balls. The device consists of a single chip microcomputer, a drive..
Features:Ultra-bright Led DesignLED Bulb,no VU and IR radiationLong Service life,high luminous efficiencyEnergy Saving,low heat and lower power consum..