Klein Curl Wired PTT Headset for Sonim XP Pro

The Klein Curl wired PTT headset in its CURL-SO4-WP version brings Klein's radio-grade earpiece design to the Sonim XP Pro, the current flagship of Sonim's ultra-rugged 5G lineup. It connects to the XP Pro's accessory interface and delivers two things every PTT deployment needs: private receive audio and instant transmit control. With the Curl in place, radio traffic moves off the XP Pro's loudspeaker and into the user's ear. That keeps dispatch chatter out of customer-facing spaces and lets users work in loud environments without holding the phone up. The inline push-to-talk control rides on the cable within natural reach, so keying up is one press — no screen interaction, no fumbling for the device, gloves on or off. Because the headset is wired, it draws everything it needs from the phone connection. There is no Bluetooth pairing to maintain, no earbud battery to die mid-shift, and nothing extra for IT to manage across a fleet. For organizations standardizing on the XP Pro for push-to-talk-over-cellular, wired accessories like the Curl keep the accessory layer as dependable as the phone itself. The CURL-SO4-WP carries UPC 198715616194 and is distributed by Social Mobile with a listed shipping weight of 2.1 lb. Teams running older Sonim XP5s, XP8, XP5plus, or XP10 devices should order the CURL-SO3-WP variant instead.