Tech Specs Compatibility: Check compatibility Product size: Rod 2: 84×76×143mm(3.3×3.0×5.6 in.) U2 Rail: 65×51×112mm(2.6×2.0×4.4 in.) I Rail: 89×51×118mm(3.5×2.0×4.6 in.) Product weight: Rod 2: 285g U2 Rail: 197g I Rail:203g System Requirements: Android...