Elfworld Pineapple Mango The ELFWORLD Caky 7000 series is pre-filled with 14mL of e-liquid and integrates a compact 750mAh rechargeable battery, supplying up to 7,000 sweet and satisfying puffs. Features: Automatic-draw Activation 14mL – 50mg Nicotine E Juice 750mAh Integrated Rechargeable Battery (USB-C) Provides up to 7000 Puffs