YESPER YJS40 Portable Car Jump Starter — a compact lithium battery booster pack that jump-starts gas engines and doubles as a USB power bank with SOS/strobe/flashlight function. The unit shows 4 blue LED bars (full charge) on the indicator strip next to the power button. Included in the hard zippered carry case: the YJS40 jump starter unit, a set of red/black jumper clamp cables, and a charging/data cable; a user manual is also present in the case. Condition: open box, unit and accessories appear unused with no visible scratches, scuffs, or damage on the housing; all four battery LEDs illuminate and the power button functions normally in the photos — no visible flaws on the item itself
