Learning Office Digital Recording Pen Intelligent Recording MP3 Player External Playback Function Product parameters： Machine size: 88mm * 33mm * 12.5mm（3.4*1.2*0.49 In） Screen size: 28 * 25mm (1.1*0.98 In) Weight: approximately 33g (0.07Ib） Supporting systems: W98, 2000, XP, etc Color: Black Operating temperature: -5 ℃~40 ℃ Storage: External memory card USB input rated voltage/power: 5V300MAH-5V500MAH S/N: ≥ 70dB External input: 3.5-frequency stereo MICRO universal interface/3.5 audio cable Frequency response: 20Hz to 20KHz Recording sampling bit rate: 128Kbps Fully charged battery recording time: approximately 10 hours Capacity (memory card) Recording time: 4GB (72 hours)/8GB (144 hours)/16GB (288 hours)/32GB (576 hours) Product description: 【 3.8-inch body+1.1-inch Single color screen】 A 3.8-inch small machine, combined with lightweight and strong ABS material, is more comfortable to use. Convenient to carry at all times, providing a better recording and playback experience. 【Front Button Design & Friendly Operating System】 The key is installed on the front, making the using easier and convenient to operate. The physical buttons can also make you feel retro. Friendly operating system interface, the using is easier and easy to understand. 【One click recording】 Press to start recording immediately without delay, then press again to save the recording. Suitable for various scenarios, convenient and fast. 【 Equipped with 2 functions of recording and playing songs 】The functions of repeated recording and timed recording are conducive for improving your learning efficiency and saving more time. The MP3 function allows you to enjoy your favorite music anytime, anywhere. 【Expandable memory】This machine can choose from multiple memory specifications and can also add an external storage card separately to achieve memory upgrades. Let you no longer worry about the issue of service life Package Included: 1*Bluetooth audio 1* Data cable 1* Earphone 1 * Instruction manual ★★【About Us】Hi, my dear angel, welcome to Jacenvly. Here, you can not only buy good and cheap goods, but also enjoy the friendly service attitude of the clerk, so that you can feel an unprecedented shopping experience。 ★★【Shop Products】Our shop has a variety of products such as Home Decor, Car Accessories, Toys, Pet Supplies and so on. Our products are inexpensive and reasonable in price. You can't miss it. Please click into our store, there is always a product that you like to buy and suits you. ★★【Friendly Service Attitude】If you have any questions about your purchase, please feel free to contact us. We provide world-class customer service and will give the best solution at the first time, and try our best to safeguard your consumption rights so that you can have no worries about your purchase. There are still 30 days to return goods without reason.