Rechargeable & Truly Portable Built‑in Large Capacity Lithium Battery – Fully rechargeable via 5V USB (power bank, phone charger, laptop, car adapter) No Mains Power Needed – Use anywhere – kitchen, balcony, camping, road trips, outdoor markets Long‑Lasting – 50W low‑power operation, yet strong suction Powerful Vacuum Performance 75kPa Vacuum Level – Strong enough for most food preservation tasks Copper Core Vacuum Pump – Durable …