PSR-F51 has basic functionality that is both straightforward and user-friendly. The PSR-F51's compact and lightweight design packs in a regular size keyboard together with 120 Voices and 114 Rhythms from all over the world. What's more, this instrument is ideally suited to a wide range of different playing scenarios; not only is the PSR-F51 great for beginners and students, you can also power it with batteries for musical performance *on the road.* Product Specification: Size/Weight: Dimensions : Width 940 mm (37”) Height 109 mm (4-5/16”) Depth 306 mm (12-1/16”) Weight :3.4 kg (7 lbs 8 oz) (not including batteries) Control Interface: Keyboard :Number of Keys :61 Touch Response :No Display :Type :LED display Language :English Panel :Language :English Voices: Tone Generation :Tone Generating Technology :AWM Stereo Sampling Polyphony :Number of Polyphony (Max.) :32 Preset : Number of Voices :120 Effects: Types :Reverb :Yes (Fixed in Voice/Non controllable) :Chorus :Yes (Fixed in Voice/Non controllable) Functions :Panel Sustain :Yes Accompaniment Styles: Preset : Number of Preset Styles :114 Fingering :Multi Style Control :Main, Fill-in Songs: Preset :Number of Preset Songs :30 Functions: Lesson/Guide :Part Mute Overall Controls : Metronome :Yes Tempo Range :11 - 280 Transpose :-12 to 0, 0 to +12 Tuning :Yes Storage and Connectivity: Connectivity :DC IN :DC IN 12V Headphones :Stereo MINI-Jack x 1 Amplifiers and Speakers: Amplifiers :2.5 W + 2.5 W Speakers :8 cm x 2 Power Supply: Power Supply :AC Adaptor PA-130 or an equivalent recommended by Yamaha, or six "AA" size alkaline (LR6), manganese (R6) or Ni-MH rechargeable batteries Power Consumption :6 W (with PA-130) Accessories: Included Accessories: Music Rest :Yes From the manufacturer Features Easy, User Friendly and Fun! The PSR-F51 is incredibly easy to use with its color-coded, intuitive control panel. Simply select a voice, choose a rhythm and start. It's as simple as 1, 2, 3! Voices and Styles from All Around the World With 120 Voices & 114 Styles, the PSR-F51 is amazingly versatile. In addition to familiar favouries such as pianos, guitars and brass, the keyboard also features many traditional instruments from all over the world. Dual Voice combines instruments such as piano and strings for a rich and powerful sound. Powerful Sound With the combination of 2.5W + 2.5W amplifiers and high-quality Yamaha Voices, you can enjoy powerful and realistic sound when performing in a wide variety of different situations. Useful Functions for Practice Including a Metronome and a Duo Mode The built-in metronome allows players to hone their sense of rhythm-vital when performing-while practicing. The PSR-F51 also offers a Duo mode that enables two people to play together on identical keyboard sections, which can be very useful when performing live or during lessons. Headphones Output Jack: Use your Headphones to practice without disturbing others or connect the instrument to a sound system when playing on stage. (Headphones and connecting cables not included). Operate Using Batteries The PSR-F51 can be operated using batteries instead of an AC adaptor. It requires six 1.5-V AA size batteries, which can be either rechargeable (1.2V Ni-MH rechargeable batteries or equivalent) or non-rechargeable. Music Rest The keyboard comes complete with a music rest for holding sheet music.