Specification Input Voltage: 5V/2A, 9V/1.67A Output Power: 10W/7.5W/5W Induction Distance: Up to 8mm Conversion Efficiency: ≥ 76% Material: Aluminum alloy, PC Net Weight: 1.62 oz/ 45.8 g Size: 3.94*3.94*0.35 inch/ 100*100*9 mm Function: Wireless charging with Qi-enable smartphones Package includes: 1 x STONEGO Wireless Charger Pad 1 x Charging Cable Features UPGRADE DESIGN - With anti-slip surface give your phone dual protection to prevent from sliding. Aluminum alloy case provides strong heat-dissipation feature and keeps charging fast. WIDELY COMPATIBLE - Maximum 10W output. Speedy 7.5W for i-Products. Impressive 5W charging in standard charging mode for most other qi enabled phones. FREEDOM OF CHARGING - Place on the Stonego pad for instant wireless charging, no cables or wires needed to be connected to your phone. Stonego upgrade design and high sensitivity induction large coil to make charging efficiency faster. ADDED PROTECTIONS - Stonego comes with overcurrent, overheat, over-voltage and short circuit safeguards system. After the phone is fully charged trickle charge mode automatically switch, don't worry about overcharged. Note: Compatible with most lightweight case. But if you have thicker case and/or has a metal plate installed with the protective cases, please remove to ensure effective charging.