Diablo 2 Unique Belts Guide

Lenymo Sash	Defense: 2 Required Level: 7 Durability: 12 8 Boxes Regenerate Mana 30% All Resistances +5 +15 To Mana +1 To Light Radius (Spawns In Any Patch)
Snakecord Light Belt	Defense: 14-15 (varies)(Base Defense: 3) Required Level: 12 Durability: 14 8 Boxes +20-30% Enhanced Defense (varies) +10 Defense Replenish Life +5 Poison Resist +25% Poison Length Reduced By 50% +12 Poison Damage Over 3 Seconds (Only Spawns In Patch 1.09 or later)
Nightsmoke Belt	Defense: 22-24 (varies)(Base Defense: 5) Required Level: 20 Required Strength: 25 Durability: 16 12 Boxes +30-50% Enhanced Defense (varies) +15 Defense 50% Damage Taken Goes to Mana* Damage Reduced By 2 All Resistances +10 +20 To Mana (Only Spawns In Patch 1.09 or later)
Goldwrap Heavy Belt	Defense: 34-36 (varies)(Base Defense: 6) Required Level: 27 Required Strength: 45 Durability: 18 12 Boxes +40-60% Enhanced Defense (varies) +25 Defense 10% Increased Attack Speed 30% Better Chance Of Getting Magic Items 50-80% Extra Gold From Monsters (varies) +2 To Light Radius (Only Spawns In Patch 1.09 or later)
Bladebuckle Plated Belt	Defense: 51-54 (varies)(Base Defense: 8-11) Required Level: 29 Required Strength: 60 Durability: 24 16 Boxes +80-100% Enhanced Defense (varies) +30 Defense +30% Faster Hit Recovery +10 To Dexterity +5 To Strength Damage Reduced By 3 Attacker Takes Damage of 8* (Only Spawns In Patch 1.09 or later)

Nightsmoke: When combined with Sorceress' Energy Shield: The effects of Energy Shield are applied first, then the resulting damages are modified by Nightsmoke. That ability doesn't change how much damage you take at all. It just calculates 50% of however much damage you took and gives you that much mana.
Bladebuckle: Attacker Takes Damage of 8 will not work with ranged attacks.