With a battery life of up to 60 hours, the P17R is a real stayer. Its main selling point is its sustainable battery technology, which is predominantly used in electric vehicles: the Safety Ytrion Cell. This is one of the safest accumulator cells on the market and with over 5,000 charge cycles without any significant capacity loss, it is also one of the most efficient. This quality extends to its solid casing – elegant black on the outside, gold contacts on the inside.