Lenovo zuk z1 64gb,3gb ram, 4000mah battery

Lenovo zuk z1 64gb , 3 gb ram, 4000mah battery, snapdragon 801. Everything works perfectly. Gives above 8 hrs screen on time when on wifi. And more than 6.5 when on 4g. Have phone and charger only. Can exchange for high end phone. Will pay the difference