The RobotEra XHAND1 is a five-fingered dexterous robotic hand with 12 fully active degrees of freedom, weighing 1,100 g and measuring 191 by 94 by 47 mm, comparable to an adult human hand. It uses a full gear quasi-direct-drive transmission with all active joints locally positioned and decoupled, supporting AI algorithms including imitation learning and reinforcement learning. Each joint is back-drivable with damping under 0.1 N·m for impact resistance and force control. DOF allocation is 3 for the thumb, 3 for the index finger (including ±15-degree lateral swing), and 2 each for the middle, ring, and little fingers, achieving thumb-to-pinky opposition. Each fingertip features a 270-degree encircling high-resolution tactile array sensor with over 100 points providing three-dimensional force and temperature sensing at 0.05 N minimum resolution. The hand delivers 15 N fingertip force, 80 N maximum whole-hand grip strength, and up to 25 kg palm-up load capacity with a maximum single-finger load over 5 kg. Open/close repetition speed exceeds 2 Hz. Communication is via EtherCAT at 100 MHz or RS485 at 3 MHz with 83 Hz whole-hand control frequency. It operates from -20 to 60 degrees C on 24 to 72 V with 0.15 A static and 2.5 A max current. Rated for 1,000,000 no-load grasp cycles, it supports SDK for C++ and Python with ROS1 and ROS2 compatibility, plus MR and glove teleoperation. Targets research and industrial manipulation applications.