The Trail Runner Free 2 Ultra makes life simple with its Free Technology - this innovative design integrates the power cord into the headband to eliminate tangles. Long battery life is assured with the help of multiple charging options found in the included Hybrid Battery Case - use either the rechargeable 4.0 Ah long-distance battery for extended runs or 3 x AAA batteries as a backup. Quality of life features include a secure anti-slip headband and IPX5 water-resistant design, ensure it's ready for any trail. Whether you're going far or fast, the Trail Runner Free 2 Ultra is your ultimate running companion. 550 lumen outputFree technology headband and connection systemSilva Intelligent Light - combining long reach spot light and a close flood lightComfortable fit thanks to low weight and anti-slip headbandRed rear safety light built into hybrid battery caseFlat, soft textile extension cordWater resistant (IPX5 standard)Max mode indicationHybrid battery case includedBattery: 4.0 Ah (14.8 Wh) rechargeable battery - Li-Ion 3.7V 4.0Ah 14.8Wh (3xAAA compatible)Battery indication: 4 red, green LEDsBattery weight: 85g / 3ozWeight (incl. battery): 145g / 5.1ozCharge time: 5 hoursLight Modes (distance feet, distance metres, lumens)Max mode: 550 lm / 4.5-7 h burn time / 80 m (264 ft) light distanceMed Mode: 200 lm / 10-14 h burn time / 50 m (164 ft) light distanceMin mode: 50 lm / 18.5-23.5 h burn time / 27 m (89 ft) light distance