This battery is a genuine replacement for AirPods Gen 1 and Gen 2. It is made in the United Kingdom and is compatible with Apple products. The unit type is a single battery and the unit quantity is one. It is specifically designed for AirPods and is a part type of batteries. This product is not a custom bundle and is suitable for users who need a replacement battery. The compatible models for this battery are AirPod Gen 1 and AirPod Gen 2.