The heat vest 2.0 is our first heated product with flexible heating elements. Thanks to the Velcro system, the heating elements can be attached exactly where the heat is needed. The vest is therefore the perfect source of warmth for sports, work or acute tension. Power Pack rcB 1800 for Lenz Battery Heated Socks. These rechargeable packs extend the run time for your Lenz socks and compatible with virtually every generation of Lenz products. Features: Heated women's vest with flexible heat pads Up to four heat pads can be attached variably using Velcro fasteners Heats where the heat is needed: shoulders, neck, upper and lower back Lithium packs are attached to the heat pads using snap fasteners Compatible with all Lenz lithium packs (optionally available) Machine washable at 30 degrees Outer Fabric: 87% polyamide 13% elastane Interior Fabric: 100% polyamide Lenz Battery Pack rcB 1800 Light lithium packs fit all models of Lenz heat socks, heat vest 1.0 and heat bandage 1.0 Attach battery to legband of the sock via press studs Heat can be regulated via 3 settings on the battery pack Heat can be continuously regulated remotely via smartphone (Bluetooth 4.0) Heat can be regulated remotely via 3 settings (accessories) Heat development for up to 20 hours Global charger with charging display Short charging time Flexible plastic case Package Contents: 1 heat vest 2.0 Women + 2 heat pads 2 lithium packs rcB 1800 (rechargeable) 1 USB-charger 100-240 V with charging display Battery technology: Rechargeable lithiumion batteries, rechargeable Temperature control: Heat can be regulated via 3 settings on the battery pack, remotely via smartphone (Bluetooth 4.0) or remotely via 3 settings (accessories) Temperature Levels | Heating period: Level 1 - 42 °C / 107 °F, 10 - 14 h, Level 2 - 52 °C / 125 °F, 5,5 - 7,5 h, Level 3 - 60 °C / 140 °F, 3,5 - 4,5 h Choose your temperature smoothly trough the new Lenz heat app. Lenz Heat Vest 2.0 for Women with rcB 1800 Batteries