Ansi 105 lumen for bright and dynamic pictures by IntelliBright technology for up to 120" screen- short-throw and automatic Keystone correction. Built in 5000mAh battery with a 2 hrs cable free operation. Attach an HDMI dongle to provide wireless connectivity.Charging Time - Approx. 2.5 hours (from CP-AD3 (sold separately)) Approx. 4 hours (with 1.5 A power supply). Quick 5-second boot for stress-free setup for your business presentation