Suchergebnisse für "classroom audio"

1. Bone conduction black technology, two-channel, real stereo sound2. Long battery life, built-in FM, HD calling, HD sound quality3. Lightweight and small body, easy to carry4. High sensitivity microphone, diamond knife pattern splitting process5. The principle of bone conduction, through high-frequency and low-density vibration, the ear bones make a pleasant sound6. Dual channel, 2 bone conduction transducers7. Built-in Bluetooth 5.0, FM enhanced IC, TWS wireless stereo8. Signal to noise ratio: greater than or equal to 70db9. Shell material: metal10. Power supply mode: USB charging / built-in lithium battery11. Waterproof grade: IPX 212. Audio decoding: support MP3 / AC3 / AAC / WAV and many other13. Battery capacity: 400mAh14. Frequency response range: 20Hz-20KHz15. Interface type: USB16. Function: music, call17. Charging time: 1 hour18. Playing time: 6 hours19. Standby time: 240 hours20. Input current: 0.4A21. Output power: 3W22. Input voltage: 5V23. Dimensions: 40 x 25mm24. Weight: 35gSpecification: Package Weight One Package Weight 0.13kgs / 0.29lb One Package Size 8cm * 8cm * 4.5cm / 3.15inch * 3.15inch * 1.77inch Qty per Carton 242 Carton Weight 30.00kgs / 66.14lb Carton Size 49cm * 49cm * 28cm / 19.29inch * 19.29inch * 11.02inch Loading Container 20GP: 396 cartons * 242 pcs = 95832 pcs40HQ: 920 cartons * 242 pcs = 222640 pcs

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1. Frequency response range: 20–40,000 Hz2. Impedance: 19 ohms3. Sensitivity: 103 dB +/-3 dB4. Cable: Dual-strand silver-plated wire5. Wearing style: Over-ear6. Plug type: 3.5 mm7. Cable length: Approx. 120 cm8. Package contents: Earphones, 3 pairs of ear tips, dual-strand silver-plated cable, user manualFeatures:1. 12-driver hybrid acoustic architecture (dynamic + balanced armature); optimized crossover and structural redesign deliver a professional-grade audio experience.2. Ingenious combination of dynamic and balanced armature drivers enhances audio resolution and detail, providing rich, nuanced layering for an extraordinary auditory feast.3. Features a 5-driver balanced armature high-frequency array, creating a vast soundstage and delicate sound quality that reveals rich audio details.4. Ultra-linear dynamic driver delivers deep low-frequency extension and a fuller sound, creating a superior atmosphere.5. Utilizes a precise acoustic crossover scheme for seamless, natural transitions across the frequency spectrum.6. The housing mimics the curvature of the human ear canal; combined with soft, skin-friendly silicone ear tips and an over-ear fit, it ensures comfort and stability.7. High-purity, dual-strand silver-plated cable offers excellent conductivity, minimizing signal loss and interference to ensure audio signal purity and integrity.8. The version with a microphone features simple one-button in-line controls; the built-in microphone captures sound with precision and clarity, making calls feel like face-to-face conversations.Specification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 12cm * 10cm * 4cm / 4.72inch * 3.94inch * 1.57inch Qty per Carton 130 Carton Weight 14.00kgs / 30.86lb Carton Size 54cm * 38cm * 30cm / 21.26inch * 14.96inch * 11.81inch Loading Container 20GP: 433 cartons * 130 pcs = 56290 pcs40HQ: 1005 cartons * 130 pcs = 130650 pcs

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1. Working voltage: DC3.5V-5.5V2. Current: 75mA (MAX)3. Charging time: 4 hours4. Use time: about 8 hours5. Carrier frequency: 600-900Mhz6. RF power: 10dBm7. Transmission distance: 80m (open and unobstructed)8. Receiving sensitivity: -88dBm9. Sampling frequency: 48KS/s10. Signal-to-noise ratio: 65dB (f=1kHz, P=1Pa A curve) Input voltage: DC-5V11. Ergonomic design, high-sensitivity pickup head12. The sound effect is clear and loud, comfortable to wear13. Easy to disassemble, the headset can be used as a handheld microphone after disassembly14. Anti-fool pointing, 90-degree anti-fool microphone is more humanized design15. Long-distance receiver, strong anti-interference, stable signal, 50-80 meters receiving range16. Built-in 600mAh lithium battery, long battery life17. Support 15 groups of frequency points, multi-group use without cross-frequency18. Compatible with MIC interface devices, plug and play, equipped with 6.35mm and 3.5mm adapters19. Metal hose, free to bend, easy to adjust the direction in real time20. Dimensions: 68x28x23.3mmSpecification: Package Weight One Package Weight 0.15kgs / 0.34lb One Package Size 9cm * 5cm * 11cm / 3.54inch * 1.97inch * 4.33inch Qty per Carton 194 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 194 pcs = 34338 pcs40HQ: 412 cartons * 194 pcs = 79928 pcs

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About the Product1. Presenter also knows as electronic pointer. (English name: Laser pointer with remote control) 2. This presenter device adopts the latest 6-axis of gyroscope technology, G-Sensor control movement and direction of the mouse pointer position, realize the air remote control mouse pointer and achieve the function page. 3. It is specially designed by wireless method, control computer and multimedia equipment directly, realize the freedom of electronic document page and random demonstration. 4. When you are in the electronic teaching, presentation, speech, and report, need to note the important content of the instruction, just a click with the hand, red laser points can be mapped on your document content, and will be highlighted on the screen. 5. Whether you are in the classroom, lecture hall, any corner in the hall, you just click the wireless laser pointer, what you want will automatically appear on the screen. 6. It contains air mouse function, uses the gravity induction positioning, you do not need to sit in front of the podium permanent to operate computer, can easily switch over different files and play lists, embody wireless click, unlimited communication.Features1. 2 in 1: air mouse + laser presenter function. 2. 2.4G wireless technology, effective distance 15m. 3. 8 buttons. 4. 6-axis gyroscope iocate with mouse function. 5. Mini USB receiver, plug and play, simple operation, easy to use. 6. Button life: over 300,0000 times. 7. Support system: Windows XP / Vista / Windows 7 / Windows 8, Android 4.0 and above. 8. Ergonomic design fits comfortably on your hand. Surface UV paint processing, smooth and durable.Specification: General Model PR-05 Mouse Mouse types Wireless Key Quantity 8 Movement Detection Laser Wireless Working Distance about 15m Scroll Types Scroll Wheel Mouse Size 16.7*3.6*2.7cm Mouse Weight 31g Power Supply 2 x AAA Batteries (Not included) Operating Frequency 2.420GHz~2.480GHz Package Include Package Contents 1 x USB Receiver 1 x User Manual 1 x Wireless Mouse Package Weight One Package Weight 0.09kgs / 0.20lb One Package Size 19cm * 11.5cm * 3.5cm / 7.48inch * 4.53inch * 1.38inch Qty per Carton 80 Carton Weight 9.60kgs / 21.16lb Carton Size 48cm * 37cm * 40cm / 18.9inch * 14.57inch * 15.75inch Loading Container 20GP: 375 cartons * 80 pcs = 30000 pcs40HQ: 871 cartons * 80 pcs = 69680 pcs

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1. Material: wood + electronic components2. Applicable age: 6 years old and above3. Power supply: 2 x AA batteries (not included)4. Compact and exquisite, easy to carry, both hands and brain, stimulate children interest in play5. Safe material, no burrs on the corners, safe and not hurt hands, after fine polishing, children play more at ease6. Training children practical ability, hand-eye coordination, exercise thinking, develop intelligence, explore science7. Size: about 19.5 x 10.7 x 6.5cmSpecification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 20cm * 15cm * 3cm / 7.87inch * 5.91inch * 1.18inch Qty per Carton 450 Carton Weight 46.50kgs / 102.51lb Carton Size 61cm * 51cm * 41cm / 24.02inch * 20.08inch * 16.14inch Loading Container 20GP: 209 cartons * 450 pcs = 94050 pcs40HQ: 485 cartons * 450 pcs = 218250 pcs

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