1. Size: Board diameter:17mm;PCB thickness: 1.5mm;Spring Heigth: 3mm 2. Current: 2800mA. We use the high quality 7135x8, the current is in sufficient quantities. 3. It's with reverse polarity protection. 4. Low voltage indication function. If the voltage is lower than 2.9V-3V, it will reduces the minimum brightness automatically. And will prompt you by flash once a second. 5. Power supply by Single lithium battery or 3xAA battery. It's constant current, fever and high precision. 6. Feature: No Noise 7. Modes: 100% High
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