Colour:Black Specification: Use voltage: DC5V Power: 0.1W Negative ion concentration: 6 million pcs / cm3 Product weight: 30g Product size: 55 * 17 mm/2.16 * 0.66 inch Length of use: >20 hours Power Supply:USB Package Included: 1x Air Purifier Necklace 1x Charging Cable 1x Manual Instructions: 1. Press and hold the power button for 2 seconds, the power indicator lights blue, and the product enters the working state. 2. Press and hold the power button again for 2 seconds, the power indicator goes out, and the product enters the shutdown state. 3. When charging the product, the power and other red lights flash. When the product is fully charged in 1-2 hours, the power indicator light will always be red. Note: 1. Please allow a bit error due to manual measurement. please make sure you do not mind before you bid. 2. The color may have different as the difference display, pls understand.
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