BEFORE FIRST USE: Fully charge this product (until all LED indicators are solid) using a wall adapter (18W+) or USB‑C port. Uncharged units may appear unresponsive. EMERGENCY POWER, ALWAYS IN YOUR WALLET: No more dead phone anxiety. The ultra-slim ChargeCard fits in any wallet or cardholder, so you're never caught without a charger. Keep it on you 24/7—without even thinking about it STRONG. CRAFTED FROM STEEL: Don’t let the size fool you—ChargeCard is engineered with a stainless steel frame for durability. It’s tough enough for daily carry in your pocket or bag, without bending or cracking BUILT-IN CHARGING CABLES FOR ALL DEVICES: Includes integrated USB-C and Micro-USB connectors for Android, tablets, and other devices. Also works on iPhones from iPhone 6 upwards with their standard adaptor, and the LED light shows how much power is left in your chargecard AIR TRAVEL READY – KEEP IT WITH YOU: Easily slip it into your carry-on or pocket—ChargeCard meets airline safety guidelines and can be brought aboard flights with no restrictions. Ultra Thin and Lightweight at only 3.3" x 2.2" x 0.18" (2.1oz) ChargeCard by AquaVault is a credit card size phone charger that fits in your wallet. ChargeCard is a portable charger & external battery bank that has built in charging cables so it works for both Apple & Android phones (USB-C, Micro USB). ChargeCard comes pre-charged and is engineered with cutting edge ultra-fast charging battery technology. ChargeCard is designed so small that it fits in the smallest of wallets so you never run out of battery on any of your adventures. Expect to get a 40% - 90% battery boost depending on your phone model and app usage! This compact power bank is optimized for USB-C fast charging when paired with the appropriate 18W+ PD charger. Charging speed may be slower if used with older USB-A adapters or low-quality cables. Fully charging the power bank before use ensures peak performance, particularly when powering large devices.