Siemens Signia hearing aid Silk 2px 16 Channels, Instant Fit Click CIC with Tinnitus Noiser (Left)

We have returned that product, because as per the pitcher in the web side shown as two ear buds after ordering it is only one. There is no useful with one ear bud. Hence I return the product

Nice product

SirInform battery size with number fitted in Signia 2px 16 channel hearing aid of Siemens make. Whether the size of the ear canal is required before placing an order? How many hours each battery works?

2 items or 1item

Warranty information not clear,