The new Super Record Wireless rear derailleur makes the most of Campagnolo state-of-the-art technology to guarantee maximum shifting performanceThanks to integrated sensor technology, the derailleur always recognizes under which sprocket it is positioned in order to guarantee maximum shifting accuracyBattery charge level is easy to check, either with the indicator LEDs on the component or with the MyCampy 3.0 appCarbon composite construction reduces weight while also providing maximum stiffness for nearly instant responseUnLock System allows the gear to be moved manually should it need to be for any reasonUltra fast charging times mean the battery is fully charged in just 60 minutesSingle rear derailleur adapts to all compatible SRW cassette options*Battery not included*RD23-SR12WRL12sp29MidCRBN295gUPC/EAN/GTIN: 8053340459443