BOSS Titanium has a 1 year warranty on the E-Nail's box.  
We pride ourselves on quick turn around times and do our best to swap out defective units as soon as possible.  All items are warrantied in the U.S. and defective units (that qualify for replacement) are replaced with brand new units.  Replacements are typically shipped out 1-2 business days after we recieve the defective unit.   If you have an E-Nail that needs to be repaired, please contact us at BOSSTitanium710@gmail.com.  Returns must be received within 14 days of original delivery date.
Our warranty will be voided if there are any signs of water damage.