Apple has published the EU energy label for its upcoming foldable iPhone Duo, revealing its battery capacity and endurance ratings ahead of the start of sales and deliveries later this week. The device became available for preorders last week.

According to the official energy label, the iPhone Duo packs a 4,883mAh lithium ion battery split into two cells.

The label also lists a rated battery endurance of 51 hours and 30 minutes per cycle. Apple says the battery is designed to retain its performance for at least 1,000 charge cycles under default settings.

Since the iPhone Duo is an eSIM only device worldwide, its battery capacity is expected to remain the same across all markets.