Specifications include, but are not limited to: Height: 6.8 inches (17 cm), Width: 4.8 inches (12 cm), Depth: 5.3 inches (13 cm), Weight: 3.0 pounds (1.4 Kg); 3.3.1 USB port & Ultra Long-Range Bluetooth are standard 3.5 hr Fast AC charger 3.3.2 12VDC car charger 3.3.3 Security ON/OFF Switch 3.3.4 Beeper for on-road detection verification & battery status; 3.4.1 Built-in LiFeP04 rechargeable battery pack is optimized for deep discharge and extended temperature operation. 3.4.2 Up to 2,000 recharge cycles ensures long product life. 3.4.3 Ultra-low power consumption results in 2 weeks of run time. 3.4.4 High Speed AC charger offers a quick 3.5-hour charge cycle. 3.4.5 Built-in USB charger works with provided 12VDC car plug or computer. 3.4.6 Unlimited run time with solar option. The built-in MPPT solar charger allows the Armadillo® Tracker to charge the battery even under cloudy/winter overcast conditions.