Angle grinder-resistant protection - RockSolid patented coating and reinforced core shield deliver elite-level defense in high-risk areas15mm hardened steel shackle - Heavy-duty construction resists cutting, jacking, prying, and leverage attacks for ultimate securityUnlock via the BLACK X App (iOS & Android) or optional xKey remote with secure 128-bit AES encryptionReal-time alerts & control , stay informed with activity notifications and remote management through the BLACK X AppUp to 2 years of performance on a CR2 battery, plus 2 precision laser-cut keys for emergency access15mm4.5`x9`BLE/KeyBlackNot IncludedSLBX-TI-ULRSUPC/EAN/GTIN: 850059247792