QKZ VK4 In-Ear Subwoofer HiFi Wire-controlled Earphone with Mic1. Product Type: In Ear Headphones 2. Plug: 3. 5mm 3. Impedance: 16Ohm 4. Sensitivity: 105dB 5. Frequency response range: 20Hz 40KHz 6. Horn diameter: 11mm 7. Cable length: 1. 2m 8. Headphone cable material: TPE 9. Weight: 20g Specification: Package Weight One Package Weight 0. 08kgs 0. 17lb One Package Size 12cm * 8cm * 3cm 4. 72inch * 3. 15inch * 1. 18inch Qty per Carton 200 Carton Weight 17. 00kgs 37. 48lb Carton Size 50cm * 42cm * 32cm 19. 69inch

7V 800mAh rechargeable battery pack(Included)

greatly reduce fan noise

5Gbps Ethernet which is a solution based on IEEE 802

Loading Container 20GP: 542 cartons * 80 pcs = 43360 pcs

Wide red light

smart identification of the mobile phone

Noise reduction mode recording sampling rate: 32K

long-lasting battery life (not included in delivery)

Output voltage: 5V-12V automatically adjusted according to the fast charging protocol

Muscle Relaxation: Helps alleviate muscle tension and discomfort

Minimum illumination: 0

Use voice commands to search for content