Color: silicone sleeve black red (boxed), silicone sleeve white (boxed), silicone sleeve white red (boxed) Frequency response range: 20-20000 Support subscription: support Model: QKZ-GJES Processing method: OEM processing Whether cross-border supply: yes Headphone type: in-ear headphones Plug diameter: 3.5mm Time to market: 20180702 With or without a microphone: Yes After-sales service: shop three bags Whether wireless headphones: wired headphones Earplugs / earmuffs material: environmentally friendly silicone case Packing: frosted bag packaging Type: earplugs