Daisaku Personal air purifier PURE SUPPLY PS1WT Product name: PURE SUPPLY. Part Number: PS1WT Weight: (about) 50g Size: 88mm (height)  42mm (width)  2.2cm (depth) Material: body ABS, ion generator carbon fiber, strap special cotton Built-in rechargeable battery: Li-ion polymer battery 3.7V Charging time: 2-3 hours Continuous operating time: (approx.) 150 hours (when fully charged) Accessories: USB cable (A-MicroB) 60cm  1 (USB adapter is not included) Carry Case