Feature: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.Specification:Item Type: MP3 PlayerMaterial: PlasticProduct Size: Approx. 9x4x1cm / 3.54x1.57x0.39inBattery Type: Polymer BatteryBattery Capacity: 450mahNote: Shipped With Built In Battery, Shipped With Memory Card (Already Installed On Top Of The Product).Package List:1 xMP3 Player1 x USB Data Cable1 x Instruction ManualNote:Please allow some error due to manual measurement.