CircleOne is stylish designed and support QI standard wireless charging technology power bank. Feel too attach with power core when charging smart phone with the cable. Too annoy playing mobile game when phone still charging through cable. CircleOne is just change the way smart phone should be charged. Wireless Charging mobile phone with no cable attach. Try our CircleOne wireless charging power bank: no cable attach. fast charge and stylish designed. What a great product ! Please visit our kickstarter page here!