Engine:  Brushless, enables fast and efficient rotation Maximum revolutions:  up to 10,000 ±10% RPM, with an air flow of approximately 4.2 m/s Operating speeds:  3 adjustment levels (low – medium – high) Noise:  tiшi operation with noise level ≤ 40 dB Battery:   Li-ion with a capacity of 500 mAh – lasts up to about 2.5 hours per charge, charging takes about 1 hour via USB-C port Dimensions:  about 107 × 50 × 25 mm — very compact Weight:   only 55 ± 3 g — ultra-light model Battery indicator:  The LED signal shows the charging status Material:  ABS / PP plastic Uses and functionalities Super portable design:  fits easily in a pocket, bag or hand — practical for traveling, camping, working outdoors or in the office Three speed modes  enable to quickly adjustш air strength according to needs: from a gentle breeze to strong cooling USB-C charging  means fast charging even via power bank or laptop Light weight and small size  make it practical to wear all day without feeling strained Silent operation  enables use even in a quiet environment LED charge indicator  prevents unpleasant surprises when the battery is running low