Yamaha PSR-410 (check picture for any imperfections)

Keyboard: 61 keys with velocity 

ROM: 128 sounds, 80 rhythms

Dimensions: 939 mm x 397 mm x 113 mm

Weight: 6.0 kg

This keyboard is MIDI-enabled.

This keyboard has built-in 4.5-watt stereo speaker(s).

Batteries: 6 x D