Check the listing for details. WaterGuru Sense S1 Smart Cassette - 5 Pack Pool Water Tester Monitor NEW OPENBOX. Condition: New. Listed at 89.99 USD. WaterGuru Sense S1 Smart Cassette - 5 Pack Pool Water Tester Monitor NEW OPENBOX Item is 100% authentic guaranteed! Only taken out the box for pictures!! Never been used. I will SAFELY ship it as soon as payment is received. If you have any questions please message me. -Comes with what you see in the pictures and nothing else!!! NO RETURNS!!! NEXT DAY SHIPPING!!!WaterGuru Sense S1 Smart Cassette - 5 Pack Pool Water Tester Monitor NEW OPENBOX Item is 100% authentic guaranteed! Only taken out the box for pictures!! Never been used. I will SAFELY ship it as soon as payment is received. If you have any questions please message me. -Comes with what you see in the pictures and nothing else!!! NO RETURNS!!! NEXT DAY SHIPPING!!!