Battery: lithium batteryModel: S11Quantity of microphone: BIDIRECTIONALRecording format: WAVGift-giving purposes: school class, exercise recording, learning English, listening to music, enterprise training, business negotiation, public security law work, negotiation recording, interview recording, family recordingProduct Weight: 47.5Transmission Interface: USB 2.0Maximum number of recording files: 999Recording Mode: HD noise reductionVideo recording: video shooting is not supported.Microphone: BidirectionalPacking List: recording products, headset cable, instruction manual, data cable, warranty card, packing box. (Customizable English version)Recording distance: 5-10 metersRecording Time: 1000Fastest shipping time: 1-3 daysApplicable people: students, sports experts, music enthusiasts, teachers, trainers, business people, public security officers, lawyers, journalists, public figures, young and old careShell material: Alloy integrationAttribute 3:MP3Attribute 1: HDProperty 2: IntelligenceProduct Size: Dial: 4.4*1.8*3.8; Strap: 225Applicable occasions for gifts: wedding, birthday, festival, housewarming, trade fair, advertising promotion, employee benefits, anniversary celebration, business gifts, Opening Ceremony, awards commemoration, public relations planning