Penlight Non Rechargeable Lithium Thionyl Chloride (Li So Cl2) Battery, 3.6 V 3800m Ah, Ht, Primary Battery. 18.5x50.5mm. Vo=3.66 V, Ic=1000m A, Ip=2000m A. Vend=2 V
Its great, our dogs love it. I suggest you highlight that the filter needs to be changes around every two weeks and you offer addition filters to be purchased. After reading the instructions I realized I needed to buy additional filters which I bought from Takealot.
