BOSCH GCY42 3.0V Bluetooth Tool Module - Amazon.com
Bosch Set 2x ProCORE 18V 12.0Ah + GAL 18V-160 C + GCY 30-4, WJA Distributors - DIY & Professional Power Tools in Malta & Gozo - Bosch, Skil, Yato, Dremel, Ken, Carat
Unpacking BOSCH GDX 18V-200 C - BlueTooth GCY30-4... - YouTube