No outlet? No problem. Take clean air with you and enjoy the therapeutic benefits of aromatherapy wherever your heart desires. The perfect size for your car cup holder, the Energia Portable Diffuser will diffuse for over 2 hours continuously on battery power alone. Keep it in your car for long drives, or place it on your bathroom counter while you soak in the tub. No matter where you go, you can enjoy the gift of aromatherapy.