3.7V, 270mAh, Li-Polymer Battery fits Sennheiser, 450 Travel, 550 Travel, 0.999Wh

Battery Fits Models:- 450 Travel, 550 Travel, Mm 400, Mm 400-x, Mm 450, Mm 450-x, Mm 500-x, Mm 550, Mm-550-x, Pcx 360 Bt, Px 210 Bt, Px 310 Bt, Px 360, Px 360 Bt, Pxc 310, Pxc 310 Bt, Pxc 360 Bt

---

Battery Part Numbers:- 0121147748, Ba 370 Px, Ba370, Ba-370px

---

Our battery should have the exact dimensions and fitment as the original battery; the fit and finish are checked before dispatch. Cameron Sino is one of the world's most successful third-party battery manufacturers; check out our products and service reviews. All are verified and genuine. There can be occasions when the battery model number or the model of your device is not listed in the information below. Don't despair contact us via live chat or email, and we can confirm fitment for you. If we tell you that a battery will fit and it does not, we will cover all expenses to get the battery returned for an exchange or a full refund. There can be occasions when the battery model number or the model of your device is not listed in the information below. Don't despair contact us via live chat or email, and we can confirm fitment for you. If we tell you that a battery will fit and it does not, we will cover all expenses to get the battery returned for an exchange or a full refund. Please compare the data below with the models that you see in the tables. If you cannot match both the model and battery number, contact us to confirm fitment for you. If for any reason, the product develops a manufacturing defect during the 12 month warranty period, we will replace the defective item free of charge. If you look after your new battery and only charge the battery when it gets low, This will extend the battery's life. If the battery is charged too often, you will quickly use up the cycle life. ISO 9001 certification ensures that strict manufacturing standards are adhered to. Safety is a primary concern, and we use only high-quality components to ensure that stringent standards are met. The batteries we supply should perform as well as your original. Check that your product is shown below in the products table. Special Remarks:- None at this timePlease make sure that the device manufacturer, The model number, and the battery part number are all listed in our product details. Some manufacturers have more than one battery type fitted in like models. We recommend that you remove the original battery before ordering to confirm this. If you are not sure, we may verify for you.Sometimes there may be a variance in the capacity of our batteries compared to the original. Usually, this depends on the availability of the cells contained within.