Mechanical Heart and Badge:

Rare(Non-prime)

Line Value
STR/DEX/INT/LUK +1 to +6
WATT/MATT +1 to +3
Speed/Jump +1 to +4
MaxHP/MaxMP/DEF +5 to +60

Rare(Prime)/Epic(Non-prime)

Line Value
STR/DEX/INT/LUK +2 to +11
WATT/MATT +1 to +11
MaxHP/MaxMP/DEF +10 to +125
Speed/Jump +2 to +6
%STR/%DEX/%INT/%LUK +1% to +3%
%MaxHP/%MaxMP/%DEF +1% to +3%
All Stat +1 to +3

Epic (Prime) / Unique (Non-prime)

Line Value
STR/DEX/INT/LUK +4 to +15
WATT/MATT +4 to +12
MaxHP/MaxMP +15 to +185
DEF +15 to +150
Speed/Jump +4 to +8
%STR/%DEX/%INT/%LUK +1% to +5%
%MaxHP/%MaxMP +1% to +6%
%DEF +1% to +5%
%All Stat +1% to +4%

Unique (Prime) / Legendary (Non-prime)

Line Value
STR/DEX/INT/LUK +8 to +17
WATT/MATT +6 to +13
MaxHP/MaxMP +20 to +250
DEF +15 to +185
%STR/%DEX/%INT/%LUK +2% to +6%
%MaxHP/%MaxMP/%DEF +2% to +8%
%All Stat +1% to +5%
Skills and Potion HP Recovery % Increase +5% to +20%
STR/DEX/INT/LUK +1 per 10 Character Levels

Legendary(Prime)

Line Value
STR/DEX/INT/LUK +8 to +19
WATT/MATT +8 to +15
MaxHP/MaxMP +25 to +310
DEF +20 to +250
%STR/%DEX/%INT/%LUK +3% to +8%
%MaxHP/%MaxMP/%DEF +3% to +11%
%All Stat +2% to +6%
Skills and Potion HP Recovery % Increase +5% to +20%
Mesos Obtained/Item Drop Rate +2% to +5%
Skills and Potion HP Recovery % Increase +10% to +30%
STR/DEX/INT/LUK +2 per 10 Character Levels