Capacity 126g Dimensions (W x H x D) 156 x 110 x 63 Key Technology Dual Inverter Fan Additional Benefit Respiratory Sensor General Product Type Wearable Air Purifier Air Volume (LPM) * LPM 20 ~ 55 (Max.) ( fully charged) 4 hours (min) ~ 8 hours (max) charging time approx. 2 Hours Fan Speed High/Medium/Low Battery Source, Internal Rechargeable Lithium Battery (820mAh) / USB Type C. Color Design WhiteAir Air Purifier H13 Grade HEPA Filter Dual Inverter Fan, Respiratory Sensor Support Exhaust Valve Dimensions Product weight (W x H x D), mm 156 x 110 x 63 Box (W x H x D), 180 x 136.5 x 141 mm Weight (net) 126 grams