Feature: 1. LARGE CAPACITY AND VERSATILITY: This recorder has a large memory capacity, enough for over 25 hours of continuous recording and up to 750 hours of file storage. Its compact size also makes it a handy MP3 player and USB drive when needed. Easy to carry, hold it in your hand, hang it on your car keys, hang it on your bag, put it in your pocket. 2. CRYSTAL CLEAR SOUND QUALITY: The recorder utilizes intelligent dynamic microphones and triple noise reduction technology to ensure noise free recordings and 360 degree panoramic recordings that deliver clear sound. You can enjoy the recording and playback process with ease. 3. EASY RECORDING AND NAMING: With a simple toggle switch, it can start recording after about 5 seconds and save the recording by switching the switch to "Off/Save". Each recording is named with a time stamp, making it easy to find the file on your computer. 4. VOICE ACTIVATION: To minimize gaps and whispers in your recordings, save battery life and free up memory space, simply follow the instructions to activate the voice activation feature. It can catch sound from 60 meters away and record it when it is heard. 5. WIDE APPLICATION: Perfect for lectures, meetings, interviews and more. It makes a wonderful present for teachers, students, writers and anyone who needs a reliable voice recorder. Specification: Item Type: Keychain Voice Recorder Model: S25 Material: Metal, Electronics Battery Type: Built in 95mAh Lithium Battery (included) Size: Approx. 7x3.4x0.9cm / 2.8x1.3x0.4in . Package List: 1 x Voice Recorder1 x Wired Earphone1 x Charging Cable1 x Instruction Manual Note: All data are measured manually, and there are certain errors in the measurement results.