Garmin's new GPS tracking collar in a small format has a battery life of 16-30 hours. It is waterproof to 1 ATM (10m water column) and has a maximum range of 6.4km.
This additional collar fits the Garmin models: Alpha 100 / Astro 320
Specification:
Weight: without collar: 145g, with collar: 198g
Dimensions: 7.8 x 4.5 x 3.5 cm
Neck Circumference: 24-35.5cm; collar width used: 1.9 cm