Features 1.DICTIONARY FUNCTION: MP3 music player is equipped with English dictionary function and English phonetic transcription to enhance English strength. 2.HIFI SOUND QUALITY: MP4 player has HIFI sound quality, external playback and Bluetooth switching freely, which can give high definition music experience. 3.STABLE CONNECTION: MP3 player connects faster and more stable, and can be connected to a variety of devices such as Bluetooth headphones and Bluetooth speakers. 4.NOISE CANCELLATION: HiFi MP3 player uses high power external speaker with professional intelligent digital noise reduction chip for more clarity. 5.SMALL AND LIGHTWEIGHT: Bluetooth MP4 player is small and lightweight, no weight, very easy to carry, almost can not feel the weight. specificationItem Type: MP3 Player Material: Plastic Product Size: Approx. 9x4x1cm / 3.54x1.57x0.39in Battery Type: Polymer Battery Battery Capacity: 450mah Note: Shipped With Built In Battery, Shipped With Memory Card (Already Installed On Top Of The Product) PackageList1 x MP3Player 1 x USB Data Cable 1 x Instruction Manual NotePlease allow some error due to manual measurement.