T2 UFO II Wireless Pen Adjust strokes: 3.0mm - 4.5mm. Grips: 2 Grips are included a standard one and a tapered grip. Screen: Full Color Screen Battery: Includes 2 batteries 18500 lithium battery + Charger + Cord. Battery run time: 4-7 hours depending on use, with 1-2 hour charge time. Pen Size & Weight: 5.75 inch long, and 5.6 oz (without battery) and 6.35 oz with battery included App Connection via Bluetooth: Search for: "T2PEN" in app store. Warranty: 1 year warranty (from date of purchase)