Pen-Style machine Interchangeable Stroke Options Stroke Length: 1.8 mm & 2.5 mm options included. Weight: 4.7 ounces (134 grams) Battery Life: N/A Connectivity: RCA cable or wireless Voltage Range: 4-9.5 V DC Grip: 26 - 19 mm tapered Compatibility: Airbolt Mini, Lightning Bolt Uni, Standard Universal Membrane Cartridges Made in the USA Only used a handful of times. Bought for $1100 brand new.