A top-mounted, high-sensitivity GPS/GLONASS receiver, T 5 mini dog device uses LED beacon lights activated from its compatible handheld device. The lights work in low-light conditions and at night, and are visible up to 100 yards away. Rugged and water-resistant to 10 meters, the tracking-only dog device with collar is tough enough to run wherever your dog runs, up to 4 miles away. T 5 mini ships with a 3/4-inch blue collar strap. Replacement straps are available in multiple colors (sold separately).
Garmin T5 Mini GPS Collar Dog Tracking Device Specifications:

• Unit dimensions (WxHxD): Mini: 3.1" x 1.8” x 1.4” (7.8 x 4.5 x 3.5 cm)
• Weight: 5.1 oz (145 g) for transmitter and antenna (without collar); 7.0 oz (198 g) total weight (with collar)
• Battery type: rechargeable lithium-ion pack; user replaceable
• Battery life: 16-30 hours
• Range: 4 miles
• Interface: USB
• Water rating: 1 ATM (10 meters)
• Neck size: Minimum of 9.5” (24 cm) in circumference
• High-sensitivity GPS/GLONASS receiver: Yes
• GPS antenna: top, orange
• Stimulation/Vibration/Tone: No
• LED beacon lights: Yes
• Rescue mode: Yes
• Replaceable collar straps: Yes
• Collar compatibility: 3/4” (1.9 cm)