Remember that coupons cannot be combined with other coupons and cannot be used on Refurbished products. 
Auditory Protector Bonus Bonus Kit. Spare part compatible with the following models: GGT650X GM650X GM650XB PP650X
Reference:
R10000389
Auditory Protector Bonus Bonus Kit
€8.39
€20.99
-60%
Free shipping in 4 - 6 working days for orders placed before 13:00h · 6 months warranty
Auditory Protector Bonus Bonus Kit