The guee tadpole rear 4 led light using 4 super bright led39s a high quality battery and mini usb for charging the tadpole provides long lasting performance and excellent value for money built in interchangable lithium battery provides at least 1000 times charges and with burn times of up to 7 hours per charge the tadpole is a perfect communting partner that will last the test of time a complete recharge takes just 1 hour and 40 minutes and battery indicator lights ensure you won