It has all the advantages of Quantum's Turbo packs, including:
Fast recycling.....1/10 sec. in TTL, 1.5 sec. for full power shoe mount flashes
Lots of power..... 400 to 2000 shots per charge, shoe mount flash
Trademark "gas gauge" like all Quantum Turbos
Charges up in just 1.5 hours.
No-memory NiMH rechargeable cells.