Key benefits - Consolidates multiple SIM and nano cards in a single, organized case, reducing the need to carry loose cards. - Protects cards from damage and loss with a high-density soft EVA interior that cushions and keeps cards in place. - Sturdy aluminum shell provides durable, lightweight protection with long service life. - Pocket-friendly and travel-ready: compact design fits easily in a pocket, handbag, or backpack. - Smooth edge design with anti-magnetic, dust-proof, and anti-static properties for reliable performance. - Easy access and quick card management when you need to swap SIMs or access specific cards. Slot configuration and protection - Slot configuration: 4 SIM card slots and 12 Nano card slots, 4 Micro-SIM card slots and 1 pin slot. - Interior material: high-density soft EVA foam to properly organize your cards and prevent damage, scratches or loss. - Exterior construction: high-quality aluminum for sturdiness, light weight, and shock resistance. - Edge design: smooth edges to minimize snagging and wear; stable structure for long-term use. Materials and construction - Exterior: aluminum for durability and lightweight performance. - Interior: soft EVA foam provides cushioning and organization for all cards. - Design attributes: anti-magnetic, dust-proof, anti-static, with a stable, long-lasting structure. Portability and usability - Lightweight and compact, designed for easy transport. - Suitable for pocket, handbag, or backpack storage. - Designed for practical everyday use and travel scenarios without adding bulk. Practical use scenarios - International travel: carry multiple SIMs and nano cards to quickly switch networks and coverage without hunting through wallets. - Business trips or device testing: keep spare SIMs and micro/nano cards organized for multiple devices on the go. - Tech enthusiasts or field personnel: convenient portable storage for cards used in development, testing, or on-site setups. Care and maintenance - Wipe exterior with a soft, dry cloth to remove fingerprints or dust. - Keep away from harsh chemicals to preserve the finish of the aluminum shell. Note - The product maintains the specified configuration of 4 SIM card slots, 12 Nano card slots, 4 Micro-SIM card slots and 1 pin slot, combined with a high-density EVA interior and aluminum construction for durability and protection.