Volt 400xc double click to high 4 modes high low hyper constant flash runtime 300lm 1 hr 100lm 8 hrs 400lm 8 hrs 100lm 20 hrs recharge time 7 hours usb rechargeablerapid mini triple led with one powerful centre led up to 25 lumen output usb recharge li ion battery flextight compatible o ring attachment with adapter included modes constant flash rapid pulse runtime 3 30 hrs depending on mode weight 31g opticube lens technology battery auto save low batt