(Battery not included... Works only with FastClick 3.3 / 2.7 / 2.0 / 1.7Ah SmartCore Li-Ion Batteries; sold separately)
The kit contains 2 items:
1. Battery receiver [back-plate] for FastClick System Batteries – 3.3Ah, 2.7, 2.0Ah, and 1.7Ah
2. Original style back-plate with cable guides just in case you want to convert backwards.
Attention! To replace the back-part, do NOT cut the headband itself. Clip out the plastic part. Insert the the elastic straps into the new back-plate.