General description This Walkie Talkie Wireless Bluetooth PTT Headset Earpiece is designed for hands-free communication, compatible with a wide range of walkie talkies and mobile phones. It features a portable and lightweight design, making it easy to carry. The headset provides loud and clear voice transmission, ensuring effective communication in various environments. Technical specifications Color: Black Material: Plastic Pin diameter: 3.5mm and 2.5mm Double pin inside: 8mm 2-pin wheelbase: 11mm Measurement allowed error: +/- 1-3cm Compatibility and accessories Compatible with KPG models: KPG27D, KPG29D, KPG48D, KPG49, KPG55D, KPG56D, KPG62D, KPG66D, KPG69D, KPG70D, KPG74D, KPG75D, KPG77D, KPG82D, KPG87D Compatible with TH models: TH-D7, TH-D7A, TH-D7AG, TH-D7E, TH-F6, TH-F6A, TH-F7, TH-F7E, TH-G71, TH-G71A, TH-G71E, TH-K2, TH-K2A, TH-K2E, TH-K2ET, TH-21, TH-21AT, TH-21BT, TH-22, TH-22A, TH-22AT, TH-22E, TH-26, TH-27, TH-28, TH31AT, TH31BT, TH41AT, TH41BT, TH-42, TH-42A, TH-42AT,