The standard hydrophone is a Sensor Technology SQ26-05 pre-amplified hydrophone on one cap.
Several other hydrophones models are available for custom integration, including the Aquarian Audio H2c, the Aquarian Scientific AS-1 and the whole series of Cetacean Research Technology sensors.
The canister can be delivered with two different battery setups: 3xD batteries or 3x3xAA batteries.
The unit can go down to more than -500m, depending on the provided hydrophone and possible additional limitations.
Delivered with standard accessories: 10bags of re-usable Silica Gel, 256GB mSD card, O-Ring gel lubricant