Specifications include, but are not limited to: 8 EA (VR2AR) 69 kHz Acoustic receivers with a triggered acoustic release mechanism and built‐in transmitter compatible with the Vemco/InnovaSea VR100‐300 Tracking Receiver. Remote sub‐surface communication reporting tilt, range, noise, temperature, number of detections, signal strength, remaining memory, and battery life. Capability to detect and record V16‐6x Vemco/Innovasea transmitters and Vemco/Innovasea VR2Tx Receivers. Bluetooth enabled. Powered for up to 14 months by one 3.6 V Lithium D battery. Memory storage of up to 3 million detections. Depth rating to 500 meters. Compatible with Vemco/Innovasea VUE and Fathom Connect software. 75 EA (V16‐6X) Coded 69kHz internal transmitters, round case, unique ID codes, random transmission delay of 90‐180 seconds, 10 years (3650 days) tag life, compatible with Vemco/Innovasea VR2Tx, VR2AR Acoustic Release, VR2W‐69kHz, and VR100‐300 Tracking Acoustic Receivers, and Vemco/Innovasea VUE and Fathom Connect software. 8 EA Replaceable release mechanism for use with the Vemco/Innovasea VR2AR Acoustic Release Acoustic Receivers. 8 EA (VR2AR) Provides buoyancy for the Vemco/Innovasea AR2AR Acoustic Release Acoustic Receivers without decreasing detection range. 2 EA Magnetic activation probe compatible with Vemco/Innovasea VR2W, VR2Tx, and AR2AR Acoustic Receivers. 30 EA (NexTrak R1)69 kHz Acoustic receivers with built‐in transmitter compatible with the Vemco/InnovaSea VR100‐300 Tracking Receiver. Remote sub‐ surface communication reporting tilt, range, noise, temperature, number of detections, signal strength, remaining memory, and battery life. Capability to detect and record V16‐6x Vemco/Innovasea transmitters, Vemco/Innovasea VR2AR Receivers, and Vemco/Innovasea VR2Tx Receivers. Bluetooth enabled. Powered for up to 13 months by two 3.6 V Lithium D batteries. Memory storage of up to 5 million detections. Depth rating to 750 meters. Compatible with Vemco/Innovasea Fathom Connect software.