Echo eFORCE 56V High-Capacity 5.0Ah Lithium-Ion Battery - LBP-56V250 1983 There is an optional heart

There is an optional heart rate monitoring feature available as well

Inverter Technology - lighter weight and more efficient

Intel HD Graphics 400 with shared graphics memory

Lex Luthor

Echo eFORCE 56V High-Capacity 5.0Ah Lithium-Ion Battery - LBP-56V250 1983 There is an optional heartBattery, Battery Capacity 5 Ah, Battery Chemistry Li ion, Charger Included No, Number of Batteries Included 1, Terminal Type Recessed Contact, Voltage 56 V, Cordless Tool Kit Contents (1) Battery, Included Charger Class Rapid, Charger Input Voltage 115 to 120V, Automatic Shut Off Yes, Number of Cells 28, Battery Series eFORCE(R), Cordless Tool Battery Platform ECHO eFORCE(R), Overall Height 4 in, Overall Length 7 in, Overall Width 3 1 4 in, Weight 4.