Durable The rechargeable, replaceable 5000-mAh battery provides up to 77 hours of battery life. Practical Thanks to its handy design, the Summair 2Go is your perfect mobile companion. Powerful The Summair 2Go produces a quiet breeze at low rpm and a powerful airflow at maximum power. Sophisticated design The Summair 2Go combines an airflow-optimised ARCTIC fan with a long-lasting battery, ensuring reliable cooling on the go.