Doshisha BFSV-02B(NV) Neck Fan PIERIA, Navy and Gray, set of 2. Brand new, unused. Feel free to ask any questions. Multiple purchases from my other listings are welcome. Usage: Neck-worn Power supply: Rechargeable Fan speed settings: 3 levels Continuous usage time: 2 hours (strong), 6.5 hours (weak) Charging time: 4.5 hours Weight: 200g Width: 175mm Height: 64mm Depth: 197mm Power: DC5V AC adapter / built-in rechargeable battery Built-in battery: Lithium-ion battery Power consumption: Approximately 3.5W USB cable length: Approximately 0.7m