Almost new, refer to link for details:
https://m.yuwell.com/index.php/product/info/57.html
鱼跃制氧机8F-5W 医用级5L家用吸氧机
静音升级 0-5L无极调节 医用氧浓度
Yuyue 8F-5W Oxygen Concentrator Medical Grade Concentration Oxygen Inhaler Household Oxygen Inhaler Elderly Pregnant Women Oxygen Machine.
Self-collect at lakeside mrt
or delivery for S$20.00, within 1 working day(s)