Technology: GaN chip for stable, cooler and safer charging Maximum Output: 45W Fast Charging: Supports Samsung Super Fast Charging 2.0 Charging Performance: Charges compatible Samsung phones up to 70% in 30 minutes MacBook Air Support: Charges up to 52% in about 1 hour Protocols: SFC 2.0, PD 3.0, QC 3.0, AFC and PPS Compatibility: Phones and tablets Protection: Six safety protections including over-current and over-voltage protection