costzon 61-key portable digital piano, upgraded premium electric keyboard w/ 128 rhythm, 128 tone, sustain pedal, midi/usb interface, power supply, bluetooth function (black) costzon <p><br><b>description: </b> <br>the upgraded 61-key digital piano keyboard with portable carrying case will be a perfect musical instrument whether for beginners or intermediate users. the most important improvement is the knocking force key function switch by long pressing transpose+ button. and comparable with pvc panel, the silicon panel will effectively avoid hidden malfunction. in addition, external sound will present louder sound than built-in one which enhances outstanding acoustics. teaching function helps user to learn demos easily and bluetooth function is convenient for user to follow playing with music. additional features including protection function, mic function, mp3 function, recording function, drum kit and chord will provide better playing experience. </br> <p><br><b>features: </b> <br>128 rhythms, 128 tones and 20 demos <br>midi interface allows connecting different smart devices <br>bluetooth function facilitates following playing with music <br>can connect headphones, to create quiet playing environment <br>silicon panel equipped with buttons is more safe and reliable <br>can be charged through power bank, computer usb or power strip<br>long battery life up to 12 hours after 4 hours charging<br>waterproof carrying case is convenient for carrying keyboard<br>suitable for all ages, a perfect christmas gift for kids and friends<br>the keyboard will automatically reset when battery voltage below 3.5 v</br><p><br><b>specifications: </b><br>color: black<br>keyboard material: abs, aluminum alloy <br>case material: oxford cloth<br>keyboard dimension: 34.5"x7"x2.5" (l x w x h)<br>case dimension: 35.5"x7.5"x3" (lxwxh)<br>output power of piano: 500 mv<br>input power of charger: 110 v<br>charging time: 4 h<br>playing time: 12 h<br>net weight: 8 lbs<br>suitable age: 3+</br><p><br><b>package includes: </b><br>1 x 61-key digital piano<br>1 x case<br>1 x charger<br>1 x sustain pedal<br>1 x user manual