lamp checker lamp tester light checker light tester factory 1.6F22 9V battery inside 2.Color: ... , white, black ...... light tester TEL:86 152 5837 0492lamp/light checker/tester. factory we are a factoryDescription: 1.6F22 9V battery ... inside2.Color: blue, white, black 3.Can detect lamp E27, E14, E10, G5, G13 and so on ...