正品卡西欧CASIO CTK-550 标准61力度键二手电子琴：

功能说明：
n
nspeakers喇叭
n100 rhythms list 100节奏名单
n100 tones list 100音色列表
nmode selector 模式选择
nmain volume slider 主音量滑块
naccomp volume slider 伴奏音量滑块
ncounter button 节拍统计
nrhythm button 节奏按钮
n3-digit display 3位数字显示
ntone button 乐曲按钮
nsong button 乐曲键
nchord memory buttons 和弦记忆按钮
ntune buttons 调整按钮
ntranspose buttons 移调按钮
nsong bank list 乐曲库名单
nsynchro/fill-in button 自整伴奏/填充按钮
nstart/stop button 启动/停止按钮
nintro/ending button 前奏/结束按钮
ntempo buttons 节奏按钮
ntouch responce button 力度响应按钮
nsong bank controller button 乐曲库控制按钮
nsustain jack 延音踏板接口
nphones/output jack 耳机/输出插孔
ndc 9v jack9V 直流适配器插孔

实体琴图片供大家参考：

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