Specifications: 1. Size: 11*8.5*3.7cm 2. Weight:166g 3. Powered by:18650 flat head battery (included) 4. Color: black 5. Speed mode:stepless speed regulation 6. Output power(max):4W 7. Input current:0.5-1A 8. Working time:2-8 h 9. battery specification: li-on 18650 3.7V (2200mah) 10. Battery installation:removable 11. Charging time:4-5 h Battery precautions: - Please follow the instruction to operate the product. - Please take battery out when not use. - Do not mix old battery and new battery or different type of batteries to use. - Do not charge for the ordinary battery. - Alkaline batteries are recommended; Please distinguish the negative and positive. - This product use 18650 flat head battery. Package includes: -1 x Handheld mini Fan electric personal fan -1 x 18650 2200 mah rechargeable battery -1 x USB cable -1 x user's manual
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