SPECIFICATIONSBrand Name: NONEChoice: yesHigh-concerned chemical: NoneIs Batteries Included: NoMaterial: Rubber,MetalOrigin: Mainland Chinasemi_Choice: yes Name:PickupMaterial:Metal+PlasticJack: 1/4" (6.5mm)Cable Length: Approx. 9cm / 3.54inItem Weight: 22g / 0.77ozPackage Weight: 24g / 0.84ozPackage Size: 10*7*2cm / 3.93*2.75*0.78inFeatures:1.Professional & Powerful--the pickup with 1/4" connector, works great in minimizing noise interference. Just plug in external amp and play.2.Convenient--it comes with a cable tie and a plastic base, to secure and keep the extra wire neat and tidy on the instrument panel.3.Compact & Portable--mini size and approx. 0.77oz light weight enables you to carry it anywhere, use it freely.4.Adhesive & Reusable--due to double sided tape on its back, it is easy to install it or remove it for reuse, with no damage to the panel.5.Widely Used--this instrument pickup can be applied in acoustic guitar, violin, mandolin, pipa, cello, kalimba, ukulele, etc.Notes:1.Transition: 1cm(0.39in)=10mm=0.39inch2.Please allow 1-3mm(0.04-0.12in) error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Packing list:1 x Pickup