There are different generations and as I understand it, it goes like this...
3rd gen has the velcro straps and "shark fin" on the feeding arm
For reference
1st gen doesn't have the extra "shark fin" on the feeding arm or velcro straps over battery
2nd gen has the velcro straps over the batteries, but no "shark fin" on the feeding arm
There is a sharks fin and there are Velcro straps on the batteries, does that make it 3rd Gen then?