There are several identical devices with different label at different prices. There is no need to buy the more than two to three times as expensive original Canon. I already suspected that the devices from the same manufacturer. The Phottix device is working properly, the plug for flash has its own rubber grommet and sits absolutely firmly. The recycling times are greatly increased, with direct lightning almost without a break. The Note, after 15 series flashes the unit stand for 10 minutes (cool) to let is impractical, will probably repel rather WARRANTIES. The warming of the electronic part is minimal, unless you're deeply stowed the device in the clothing and so gives him a chance to cool down. For bounce flash, one should have no illusions, then contact depending on room size at full flashes naturally breaks in the flash rate, but not as long as without the spare battery. The assembly on the tripod socket of the camera using the supplied soil thumbscrew makes the whole package unwieldy, especially when an attached camera zusatzlichem battery grip, because the battery is over, the package is also quite heavy. It is better to put the Phottix battery into the breast pocket of the shirt or jacket. When placing the camera simply unplug the machine by lightning. Wearing the belt in the bag supplied is impractical because the spiral cable then needs to be taken especially in overhead shots quite long, with an unnecessary train the plug is formed. Conclusion: absolutely recommendable accessory for frequent Blitzer, who depend on fast flash sequences, to quite inexpensive in relation to the "original" with Canon print.