botepon 2pcs led running lights for runner, armband lights, safety lights waterproof with 4 extra batteries for for runners, dogs, bike, walking, jogging, child (white) botepon <b>specification:</b><br> visible distance: 1500ft<br> two working modes: stead lighting.<br> four color to choose: green, blue, red, white<br> waterproof, dust proof, sweat proof.<br> power supply: 2pcs battery in each running lights.<br> battery type: cr2032 button battery.<br><br> <b>new bonuses added:</b><br> package comes with 4 extra cr2032 batteries for backup.<br><br> <b>easy to use:</b><br> come with adjustable strap, soft and comfortable to tied on your arm, wrist, ankles, bike helmet, backpack, dog, pet, or anywhere you like. <br><br> <b>application:</b><br> with 2 bright led and reflective strap, the running lights can make an effective visibility distance of over 1500ft, which ensures your safety when running, walking, cycling, or just taking a peaceful stroll with your dog at night.<br><br> <b>package included:</b><br> 2 x running lights (batteries is included)<br> 4 x extra imported cr2032 batteries<br><br>