Lasts Longer in High-Tech Devices. (4 Batteries) For the best performance in high-tech devices. Directions:Press both white dots on sides and on bottom at the same time. Hold firmly for 10 seconds. Yellow indicator will raise. Blue = ample power. Red = low power. Extreme hot or cold may cause incorrect readings. Indications: Warnings:May explode or leak, and cause burn injury, if recharged, disposed of in fire, mixed with different battery type, inserted backwards or disassembled. Replace all used batteries at the same time. Do not carry batteries loose in your pocket or purse. Do not remove the battery tester or battery label. SKU: 422592 UPC:41333004961
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