HELIDA T-M1 Mini Portable Rechargeable Two-Way Radio 22 Channels Compact Walkie Talkie 1. Portable two-way walkie-talkie, suitable for outdoor activities, business collaboration, or small team communication, with simple and efficient operation. 2. Signal enhancement and clear sound quality: An Independent signal amplification chip enhances transmission strength, ensuring stable and clear calls. 3. Scratch-resistant display: Anti-scratch LCD screen shows channels, battery level, and working status in real time. 4. Intelligent noise reduction technology: CVC 6.0 intelligent noise reduction effectively reduces environmental noise interference. 5. Comfortable wearing design: Soft and non-toxic ear hooks fit the earlobe, anti-slip and stable. Main parameters: 1. Standby time: approximately 90 hours 2. Dimensions: 72×27×14mm (compact and lightweight) 3. Channels: 22 programmable channels 4. Output power: 2W (standard power) 5. CTCSSDCS: 99 groups of sub-audiodigital sub-audio interference filtering 6. Reception sensitivity: -121dBm (clear signal reception) 7. Battery: 3.7V 1000mAh polymer lithium battery 8. Effective range: 1-2 kilometers in open areas (obstacles may shorten the distance) 9. Communication mode: analog signal transmission.