Roland Jupiter X

KEYBOARD compact digital workstation with a LCD 128 x 64 dots display - three octaves with ‘slim keys’ something between decent keys and mini keys with velocity but no aftertouch (only by Midi in); also 2 wheels for modulation and pitchbender  (the same found on JD-Xi’s).
The machine works with either external PSU or eight AA batteries and features bluetooth speakers 4W
Small key version is the prior Jupiter-xm 
Jupiter x /  xm differences: the only differences between the two are the size of the synth, number of keys (slim 37 vs full sized 61) the arrangement of operation parameters. Both use exact digital engine ZEN core and thus are completely compatible with each other. 

SYNTHESIS ZEN-Core engine is also found on MC-101 and MC-707 and Model Bank’ for analogue modelling (not ACB found on provious boutique line), alongside sample playback from traditional XV/PCM sounds/banks e.g XV-5080, AX-Edge keytar, RD pianos and four analogue models of the Jupiter-8, Juno-106, JX-8P and SH-101.