Meike MK-935 refers to an electronic keyboard, not a camera flash. The product is a 61-key instrument with touch-sensitive keys and a variety of features aimed at beginners and students.

Key features
Keys and touch sensitivity: The keyboard has 61 piano-style keys with a touch-sensitive function that responds to how hard or soft you play.
Sounds (timbres): The MK-935 offers 162 different tones, including 128 General MIDI (GM) voices, 5 Chinese folk music instrument voices, 23 synth voices, and 6 drum kit voices.
Accompaniment (rhythms): It includes 200 preset rhythms for auto-accompaniment.
Learning functions: The keyboard features a built-in learning system with 100 songs, organized into three modes: One Key, Follow, and Ensemble, which help with both left and right-hand technique.
Chord functions: It includes a chord function and a chord dictionary to help users learn and play chords.

Other features:
Pitch bend: A wheel for bending notes.
Vibrato: A vibrato effect for adding expression.
Sustain: A sustain effect to make notes last longer.
Record/playback: A feature that lets you record your performance and play it back.
Connectivity: Line-out ports are available for connecting the keyboard to a stereo system.
Portability: Can be powered by either mains electricity or D batteries.