PETZL ACCU 2 DUO Z1

Lithium-Ion technology offers high capacity (6400 mAh, 3.7 V, 23.68 Wh)?
• Energy gauge allows monitoring of battery's charge level?
• Quick connection system for instant battery installation or removal?
• Rechargeable with the specially designed wall charger?
• Waterproof (IP67)?
• ATEX zone 1/21 (II 2 GD Ex ib IIB T4 Gb IIIB T135? C Db) certified product?Specifications?
• Weight: 168 g?
• Recharge time: 8 h?
• Number of charging cycles: 300?
• Watertightness: IP67 (waterproof to -1 meter for 30 minutes in fresh water)