![]() ![]() ![]() It takes three to four hours to reach full charge. It has a rechargeable built-in lithium battery with a lifetime of 12 hours from a full charge. Students can also use it to capture a lecture or record an interview. You can record the lesson and transfer it to another device, so the student can listen to it over and over again. The device is also an MP3 music player and is a great tool for learning a language. Fully charged it lasts 29 hours, but it automatically charges when you plug it into your computer using the Micro USB cable that is included. It has high-performance Canon chips and a good microphone. This model has three large buttons for record, save and listen that make it super-easy to use. Source: This is an excellent video that gives you all the information you need and plenty of info you may not need: This Recorder has a headphone jack for listening, a Micro SD slot for more storage and mic input. With a three-minute charge, you get one hour of recording time. The quick-charge feature is useful if the batteries die when you least expect it. It has a very slim design, so you can carry it in a pocket or bag. ![]() This means each sound is clear and distinguishable. The US570 has improved sound quality compared to previous Sony models. I use narrow focus when I am giving a lesson and wide/stereo when I am recording something outdoors when I want to include the ambient sound or in a group discussion when everyone’s voice needs to be heard. You can select the amount of sound you want to capture with three settings: normal, narrow focus and wide/stereo. It has a stereo microphone as well as voice operated recording. It is is 1.43 x 4.31 x 6.13 inches and weighs 1.76 ounces. At full charge, the battery lasts about 27 hours, which is one of the shorter timeframes on this list. As with the above device, you can plug it directly into your computer, and it will charge while you work. This model comes close to being my favorite, and it has many useful features, some of which I don’t need. It also gives you a sample of the sound as the video’s audio was recorded on the Olympus WS-853: Watch this short video to get a clear picture of its best features. The screen size is 1.5 inches and the memory is 8GB. The size is 4.4 x 0.71 x 1.5 inches and the weight is 2.56 ounces. Your recordings are saved, so even if the batteries die, it will not affect what you already have. The battery life is huge at 110 hours, so you can take it on trips or out for the day without worrying it will crash. It requires two AAA batteries, and if they are rechargeable, you can do it right inside the machine. This allows for true stereo sound, and when the presentation is played back, it sounds like you are in the classroom. The stereo mic is unique with two directional microphones that are at 90-degree angles. If you are recording your students’ presentations, it will automatically adjust for loud and soft voices, so all the presentations are clear. You can adjust the quality of sound, but the auto-adjust feature is excellent as you can see in the video below. You never have to worry about recharging because it automatically recharges when you are using the built-in USB port. This is my favorite because it is a handy little machine with a great selection of features.
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