Description: Breathe Cleaner Air: this personal air freshener emits more than 5 millions negative ions that push pollutants away from your personal space. Take it on the go: you can wear it around your neck since this mini air purifier comes with a strap. Wear this to create a cleaner zone of good air while traveling, in public places or in other poor air quality locations. Protect You Quietly: using advanced fan, the sound is very quiet during operation without bother you when you working or taking a rest. Long-lasting: low battery usage and rechargeable. Charge 1 hour can be used for about 8 hours ensuring your protection against airborne pollutants; the perfect accessory to protect you during season. Best Choice: Say goodbye to ordinary big size air purifier! Specification: Input Current: 250mA Purification Range: 3-5m Charging Time: About 1h Input Voltage: 5V Battery Capacity: 250mAh Working Hours: About 8h Applicable Area: Below 10㎡ Power Supply Mode: USB Anion Concentration: 5 Million Air Purifier Air Volume: 50 Cubic Meters/Hour Size Chart: Size: 53.6x21x60.5mm / 2.11x0.82x2.38inch Package Includes: 1 Piece Personal Wearable Air Purifier Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!