Shop Japan Invictus One compatible filter. Quantity: 1 piece. Unused and unopened. I have been using this product in my Invictus One at home for over six months without any problems. ◯ Invictus One: Tested and working ◯ Invictus One V2: Same specifications ◯ Invictus One Light: Same specifications ✕ Invictus One Grand: Not compatible Shipped via standard mail, so there will be no shipping or delivery on weekends and holidays. Please note that it may take 3 days to 1 week for delivery. Will be shipped in a sturdy box, such as an empty snack box, to prevent crushing. This item is not subject to price reduction. Thank you for your understanding.