• Display: 6.1-inch Liquid Retina HD (LCD) with 1792-by-828-pixel resolution at 326 ppi and 625 nits max brightness.
• Processor: A13 Bionic chip with a 6-core CPU, 4-core GPU, and 8-core Neural Engine.
• Cameras: Dual 12MP system (Wide and Ultra Wide) with Night mode, Deep Fusion, and 4K video recording up to 60 fps.
• Battery: 3,110 mAh capacity, supporting up to 17 hours of video playback and Qi wireless charging.
• Durability: IP68 rated for water resistance up to 2 metres for 30 minutes

Grading explained :

Excellent - like New with box 12 months warranty 

Premium - very Good condition no box 6 months warranty 

Grade A+ - Good condition minor marks on housing 6 months warranty 

Grade A - may have minor mark to housing and or screen 6 months warranty