Shackle Dimensions (inner): 74mm x 128mm or 2.9in x 5in
Fingerprint identification: Compliance with ANSI / INCIT 378 and ISO/IEC 19794-2
Battery: Lithium polymer rechargeable 420mAh 3.7V
This product is rainproof, though severe weather may damage the product; use with caution.
Operating temperature: -20°C ~ 45°C / -4°F ~ 113°F
Shackle: 14mm lightweight aluminum shackle
Weight: 566g. / 1.24lbs (lock only)
Emergency Unlocking: in case of low battery or malfunction, use Micro USB and portable charger for temporary charge