This lot includes 9 interchangeable heads to meet your different needs Darken or light 2 levels of brightness depending on lighting conditions / li> The built-in lithium battery can be charged and reused 15 minutes quick charge and long battery life 7-9 hours. USB charging can be done by wall adapter, power bank or laptop/desktop etc.All crochet kits in one case, keeping everything in one place and easy to carryProduct Description Color: silicone grip Specifications: Optional pattern: silicone handle, no silicone handle Hook Material: PC Hook Sizes: 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm Handle length: approx. 12 cm / 12 cm Hook Length: Approx. 4-4.5cm / 1.57-4.5cm Package size: 18 x 10 x 3 cm / 18 x 9.9 x 3 cm Color: as shown in picture Weight: about 135g Package content: 9 x interchangeable heads 1 x USB charging cable 1 x Small Wrench 1 x handle 1 x case Note: 1. Please allow little error due to manual measurement. Thank you for your understanding 2. Monitors are not calibrated same. Item color displayed in photos may be showing slightly different from the real object. Please take the real as the standard. 3. Not only items included, other stores.